Thats a bum deal but its not like they're going to tell any LEO's. Finish up, take it apart let it cool off for a while.

Also grab your bro, give him one slap and tell him not to fuck around with your shit. As a younger brother i can tell you if my bro was the one growing and i pulled a stunt like that i'd expect a heckuva alot more then just one slap.