Whatever happened, it was not a good place to lose power or have any other serious problem.
Those not familiar with the VFR exclusion areas over NYC should look at this... I've roughly superimposed the dimensions of the East River corridor over Google Earth imagery. The red arrows indicate the building struck. The aircraft impacted the 41st floor, which would put them at 400-500MSL.
Except for the up-to-1500-foot area over Brooklyn and New York Bay, this box is surrounded on all sides by the Class B, which goes down to the surface on both sides of the area.
Not suggesting that a licensed pilot and an instructor would worry about entering the Class B in an emergency, but I'll bet they were turning around anyway when the problem occurred, rather than taking a tower-controlled cut across Manhattan at Central Park, which is generally the only allowance made for VFR flights entering or exiting that area. More than likely they were trying to stay within the exclusion, initially. It's pretty tight, as you can see.
I only bring that up because I've never ventured into that box, and probably never will, assuming they don't close it now.
It's a trap, and not just because of the confined airspace- the problem is that there's nowhere to go from that altitude if you lose power or need to land ASAP. Forget the FDR or the BQE... maybe at dawn on Memorial Day, but even then there are wires and barriers, etc.
I hope he wasn't trying to make it to Central Park, because that's a long shot from 1000 feet or thereabouts (the buildings north of 59th Street are taller than they appear here), and once you get there, you'd realize it's mostly wooded.
I have no theory about this terrible accident, but I have avoided that airspace because I know that in an emergency, my only reasonable option would be the river. Not worth it, IMHO.
I've taken my chances in the Hudson corridor a few times, but only because there's more room there to turn around and try to make it to Liberty State Park, which is the only possible safe landing area near that exclusion. The odds of avoiding a ditching are much better, and if you lost control, the Hudson is about twice as wide, and you'd likely end up in the water rather than striking a building.

This raises a question: does this exclusion violate the "1000 feet above nearest obstacle within 2000 horizontal feet" rule regarding flight over congested areas? I've tried to imagine how I'd maintain that clearance while maneuvering in this box, and I don't see it .
I'm hardly the type to promote eliminating more free airspace, but this area has always worried me.
Sometimes I hate being right...
