An hour is pretty long for a soak, must of us will do 15 to 20 mintues. Why do you say this was a bad shed? If it came off well and it looks good now, whats the problem? It just took alittle longer than you wanted.

About the tornado in the tank.
What kinda things are in the tank with it. I mean, is everything smooth or are there some rougher items for it to rub on? If its all smooth and your snake is trying to use it to shed it will not get any good friction and therfor move everything around. Also you might try anchoring the items in the substrate. I anchor all my items in the substrate and it never moves. If your using a paper then moving the items will be a regular thing.

If your concerned about the next shed I would make a shed box. I am a naturalistic keeper and choose the Exo-Terra Snake Cave for mine. It looks nice and it comes with moss that will stay as damp as you want it creating a nice humid hide. If you dont care about looks you can use any sturdy container. Cut a hole large enough for your snake and place damp material(paper towels, moss, etc.) inside. I also suggest using a container that is not clear so it will feel more secure using it.