So funny, unethical (since the employee probably kept it for himself/herself), and most likely against the agreements they have with publishers.
I was able to pick up two of the PS2 version with the Mic from a store in Evanston, IL yesterday. I suppose it might be YMMV, but over at FW no one mentioned running into this. So this was probably dictated on a district/regional level.
I think they might have put me on some kind of watch list though. The employee gave me the you might be a child molester look.
That look is the "why didn't you preorder anything after all my badgering?" look. The two looks are easily confused.