Frozen Yeast...any good?

[The Dude]

My fridge went out two weeks ago and I was forced to move what was in my fridge to my Sanyo Kegerator. Well, the two yeast smack packs got pushed up against the cooling coils and were frozen for a week. Are they shot or is it OK to risk using them?

Thanks in advance for any answers.

 

[Piotr]

I doubt they will start, but if they will, go ahead and use them.