He got the key for the OPEN beta. So he's allowed to.
You don't know the concept of an
NDA do you? Currently the game is in Closed Beta, and thus subject to the NDA (Non Disclosure Agreement). Anything you say or show to someone who is not also in the Closed Beta, could result in your dismissal from the beta testing, or possibly fines.
The Open Beta, doesn't start until Tuesday, January 12th. Until then, the NDA still applies to anyone currently testing the closed beta. The NDA ceases to apply, if Cryptic officially lifts the NDA during Open Beta.