Butt went Bad

Wondering if this is typical or not.

Picked up a cyro'd butt pack last Friday from Sam's Club. Smoked one Sunday and sealed the other up real good in a ziploc and put it in the back of the fridge. I was going to rub it down tonight to smoke in the morning and I open the fridge and I can smell it. I had just checked it the day before and it smelled and looked fine.

The cyro had a date of 9/07/2010 so I thought it would be fine for a week in a good cold fridge, as I didn't want to deal with freezing and thawing it out.

Well I tossed it in the freezer tonight to kill the smell for now and I will be visiting sam's club in the morning.

Was really looking forward to smoking it as the other was farking deeelicious

Well I had it ziplocced up tight, I wouldn't normally do it that long but I figured with that long of date on the cyro it would be alright.

I'm learning I reckon, easy way or the hard way.

I guess from now on I will bbq two butts at a time.