I would send it back -- it's not supposed to be like that. I had a bag of Legends Maturity come in like that and our local Southern States folks came out and picked it right up and gave me a new bag. I'm guessing it was exposed to extreme heat at some point, but who knows. You may be right in your suspicion, but better safe than sorry! Give them a call and see what they say.
"Our greatest glory is not in never falling, but in rising every time we fall." - Confucious