The Wrestling Observer is reporting that Mike Hettniga (aka Mike Knox) has been identified as the WWE wrestler whose former residence contained shoe boxes full of steroids and human growth hormone.
Questions that need to be addressed at this point is when he got the steroids and when he moved out of the house. If he purchased the steroids prior to late 2005, it is well known that most of the roster was doing steroids at that time.
If the move was just in the last few months, you would be dealing with a variety of issues including a wrestler who would have to be suspended. However, if it was a wrestler that didn't fail a test, it would make the company's drug policy look very bad.
If the move took place prior to July 2007, it would still be against policy and result in a suspension despite there being lots of evidence that WWE's drug policy was corrupted in some form resulting from the Signature Pharmacy investigation.