For lunch today, I decided to get a buffalo chicken salad from a nearby grocery store. They generally have good salads, so I wasn't concerned. When I returned to my office to consume said salad, I noticed that the lettuce and carrots were frozen. Not just really cold, but frozen solid.

If I allow it to sit out to thaw, will it be edible then? I'm not going back to the store to return it (it was all of $5), but I'm pondering if I can salvage it. Can I heat it in the microwave for a few seconds?