I pretty much expected those routes to go. Although MTY has alot of business traffic. I don't think that the JFK-MTY-GDL route was doing too well because it was brand new and after 9/11 it had no change to be developed. The other routes wear also weak in demand.
In any case, this is just a very tiny fraction of all the routes to the U.S. so it's just a minor route reduction. AM had to let go of 3 planes so with less planes the weakest routes had to go.
According what I read here Salt Lake City will still be inagurated. Not sure if the Milan route will still be inagurated in time for next summer. I don't know wether people will return to normal by then.
Ontario is also a bit weak, but the route is only flown 3 times during the weekend so I don't believe they will let it go as it has potential to be developed.
Pan Am - The World's Most Experienced Airline.