Oh, that really sucks! Good on you for taking it in stride, though.
Fifth wheels are definitely more difficult to back up than travel trailers. They are very slow to react but when they do they go quickly and you must quickly turn the steering wheel in the opposite direction to begin to follow them around to avoid getting caught in the turn and being unable to straighten out. If you do get caught in the turn, stop and pull forward to straighten out because it will not get any better by continuing to reverse! Visibility in the mirrors is also very limited once they start to turn. One thing that I see a lot of people doing (and I used to do often) is not pulling far enough forward prior to attempting to back in. You need to ensure that the trailer is well past the intended target prior to try to back it in, like a previous poster suggested.
Other than that I agree that the fifth wheel is far superior to a travel trailer. Practice up and it will soon be second nature to you.
By the way, congratulations on the unit! The Grand Design units are very beautiful.