I''d be more concerned on why the breaker tripped. Could be the freezer.
I think it was too much stuff on the circuit. I had a dehumidifier, the freezer, and a sump pump on. After a period of rain, I think the sump pump is what shut it all down.
I'll try the worst looking can tonight. It was all snus, so it had a lot of moisture in it. It would evaporate from the cans, and form ice inside the the bags. Not a huge deal when everything was frozen. I'd thaw a tin, then top up the water as necessary. Some of the bags got *very* wet inside, and one of the tins pretty much came apart. I put it in a new tin, and stuck it in the fridge. If that made it through ok, the rest should be fine.
I have about 30% in paperboard tins, and the rest in plastic. I have some I'm just gonna toss. It was made by a very small maker, and they used the older method of fermenting the tobacco instead of pasteurization. With fermented tobacco, TSNAs can get out of hand when stored at room temperature.