The CRJ does not contain any limitation in this regard and you can use the wing low method until you reach the crosswind limitations of the airplane (so I am told).
No, that was not the reason for the paranoia. The captain was afraid of a wingtip stall and having the airplane flip on its back, a concern which appears to be pretty common.
I understand that *some* airplanes do have bank angle limitations near the ground and you should know if you're flying one of those. But for other airplanes, many pilots appear to be using the wing low method just fine. I believe an MD11 Captain mentioned when this subject came up a while back that the autoland will transition to a sideslip something like 100 feet above the ground.