re: I wonder why nobody believes AU on the Rashaan Evans bio hack?

While you are correct that the Clinton Dix violation is far more serious than the Evans one I think the point the OP is making is the potential dishonesty (if dishonesty is in fact an issue) of Auburn in making a lame excuse for the minor violation looks bad. Juxtapose that with how honest Alabama was with pointing out and coming clean on the more serious Clinton Dix violation and you can clearly see which athletic department owns up to its mistakes and which one doesn't.