You are doing the right things. Put your snake in the rubbermaid contanier again, with moist wet paper towls or put it in there with water. Make sure its not cold. I usually put it back in the cage by the heat source either over the heat pad or under the heat panel. I leave it there for a while 6 hours maybe to long but I have somtimes did it at night and woke up in the middle of the night to get him out. Then I let the snake do the work. I just hold the snake so it can go through my fingers and when it does that the skin catches my skin and it comes right off. I do not pick it it I just rubs right off.
There are a lot of other methods out there but this is what I use it may not be correct but it works.
You can also take a moist towel and rub the skin with that, gently. I read that one some where.
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