The building has been literally crumbling for years since it closed down.  It went down in a heap this morning.

 
The mayor of Atlantic City had offered to have people bid for the chance to ceremoniously push the detonation button for charity, but Carl Ichan, the billionaire who bought it after Stump's bankruptcy of the casino (and a Stump supporter), nixed it on the grounds of safety.  He did use his own money to cover bids that were previously made.

 
The link includes a video of the implosion.