You can fly it up to the stowed position, looking at the video it appears that the hoist cable failed and was stuck in that position which was hign enough not be dragged which would have been an automatic boom change. So far it looks like a new hoist hyd motor,
Quoting EMBQA (Reply 1): I thought there was a way to hand crank it back up...??
There is, it's a hydraulic hand pump the reels the cable up. But, if the cable or drum has a problem it won't help you. There is a checklist procedure for landing with the boom in trail. It looks like they did a good job.
It was the cable that snapped during an AR. Thats when the came back in to land. The boom did contact the ground. One of my friends knows a hydro guy at Rickenbacker and explained that to me. Tail number was 57-1469.