I have an article from a Bulgarian magazine called "Krile" translated "Wings". They in turn translated a Russian article about this story. I will give you a short rough translation of this Mig-23 incident.
The first person to take off in a Mig-23 with wings at 72 was Evgeniy Chelombitko on April 19th 1976. This happened at Starokonstantinov airbase where the Mig-23 entered service in 1973. On this day he is supposed to fly a practice sortie and intercept another Mig-23M flown by liutenant Yalimov. Moving the wing to 16 degrees is in the pre-flight checklist however during this period there is major contruction of hangars for the new Mig-23s. In order to lower the risk of hitting contruction machinery during taxiing it was temporarily accepted that all Mig-23s would taxi with wings at 72 and put them at 16 right before turning onto the runway (i.e. at the "tech post" where a couple of ground personnel check the aircraft before it takes off. I personally have seen this as routine at my uncle's former Mig-23 base and current Mig-29/21 base. In fact I was at the truck stationed there so I could watch the planes take off and land from closer.) Anyways the weather during that day was bad with a lower cloud altitude of 400m. The first Mig took off and it was Chelombitko's turn. he was ordered to wait for a Yak-28 that was landing. This was becoming cumbersome since the other Mig was getting farther and farther away and the need to take off was becoming greater. The technicians checked the plane meanwhile and gave a thumbs-up without noticing the wing. Chelombitko in turn was concentrated on sighting the landing Yak and forgot to move the wing. Finally the Yak lands and he proceeds onto the runway. He puts the flaps in takeoff configuration(25 degrees) but doesn't check the display where it confirms whether they are down or not and where there is also a red light which glows "Move wing". Full afterburner is applied as soon as the Yak leaves the runway. The Mig is unarmed and he expects a quick takeoff roll around 500-600m long on a 2400m runway. As soon as he starts the takeoff roll he notices that the plane doesn't "loosen up" and the runway is felt harder than usual. At V1 he pulls the nose up 10-12 degrees which is the standard AOA at which the Mig-23 takes off at. The plane doesn't lift off and continues with the nose wheel off the ground. The intruments are becoming really hard to read since the rough ride is making everything jump in front of him everytime the plane hits the crack between concrete slabs. He increases the AOA to 15-16 degrees. He checks the AOA and afterburner and everything is OK
. At this point he increases the AOA to 18-20 degrees at around 450km/h. To the right he notices that he passed a building marking that there is only 500m of runway left. Meanwhile at the control tower no one can see the position of the wing since the plane is too far. No command is given from the control tower. Another controller from a point closer sees the wing but doesn't know what to say since an aborted takeoff would result in an overrun at this great of a speed. In the end nothing is said to the pilot. Chelombitko is frantically looking for the cause of this problem and checks the flaps again seeing that the lever is moved to takeoff. At that point he notices on the display that his wing is at 72. Meanwhile the plane slowly, very slowly lifts off. At around 10m he passes the edge of the runway. Technicians at a small command post 1km from the runway see the plane hurling at them at 500km/h with a 20 degree angle of attack and the fire from the afterburner raising a huge cloud of dust and creating two big vortices behind the plane. Chelombitko movesthe wing to 16 and as soon as it starts moving he feels the sudden lift. The control tower then tells him to check the wing to which he replies that it is at 16. Chelombitko takes off at around 550km/h at a maximum allowed landing gear speed of 350km/h and a normal takeoff speed of 280-290km/h. The plane lifted off just in time due to the low fuel load, no weapons and the 20 degree pitch angle which allowed the engine to contribute some vertical thrust. After takeoff the flight was stable due to the huge speed and the rotation of the landing gear which acted as gyroscopes. After the plane lands no damage is found. He continues with the practice sortie and lands normally. Unfortunately(or fortunately) the next day a Yak-28 lands with the gear up. The pilot of the Yak was reviewed first and in all likelihood all of the commander-general's anger was laid upon the Yak pilot and he was grounded however Chelombitko is made a squad commander soon after the incident. In 1978 at Siaulai airbase captain Krivoshlik takes off with the wing at 72(runway 3500m). Landing with the wing at 45 degrees was first done by a rookie Mig-23 pilot(M. Trebugov) in the Far East in 1976. He noted that the plane felt heavy and sluggish but still landed succesfully. In East Germany a pilot on approach at 45 degrees accidentally moved the wing to 72 instead of 16 and crashed 5km short of the runway at a speed of 350km/h.
Again this was a short rough translation and is not as detailed or well written as it is in the magazine.