We normally buy all our meat from a local grass fed/range fed farmer. Last time we purchased meat from them they were out of pork breakfast sausage, so I bought a roll of Jimmy Dean sausage at the grocery store. The package had an expiration date of 10/11. About four days before that date I decided we wouldn't be using it by then, so I froze it. A couple days later I noticed that the package was getting larger, had alot of air in it. Now it's still frozen solid, but getting bigger all the time. I don't trust it and want to toss it out, but DH is very frugal and doesn't like to waste food. It's the weirdest thing I have ever seen food-wise. What would make the package blow up like a balloon? I'm thinking bacteria.