Yes Russ is a "Joker" - but when it comes down to ratings and $$ I don't see Management letting something that is just a prank run this to this length.
Risking - (what there is) ratings, advertisers twitching, and jacking with a Brand that has had published reports of its extinction - all for the sake of "messing with Cumulus" ?
Just the web redirect up for a couple of days was enough to send a message to Cumulus. The thought that now RMS is part of the stunt is, not likely. Cumulus probably said "Bring It" - Clear Channel probably already has a pelt in a box with some horns through it, waiting to send the Dickies.