The interactive "Glengarry"?

From a post on Broadway's uber-chatroom "All That Chat"... about a recent Glengarry performance, where one audience member took some umbrage at Mr Mamet's F-words:

"Watch Your Language, You Idiot"--Shouted out at Liev Schreiber last night, a
couple of minutes into the second act, by some misguided/naive theatergoer who
apparently had no idea where he was (perhaps at a town meeting) or what he had
come to see. And giving LS full credit for the script! The result, hundreds of
spinning heads and a 3 second glare from LS that was beautful to see.

Is this the prize audience the increasingly expensive Successful Broadway Play now attracts?