I attended IMX 2012 in Las Vegas, and there was an arrangement for everyone to receive complimentary tickets to "Believe." This wasn't something I was excited to see, so when the deal was revoked, I wasn't particularly disappointed - especially because Terry Fator offered us free admission to his show instead.
As it happened, Angel told the IMX team that the tickets were conditional - the condition was that IMX had to agree to give a testimony that Criss Angel's "Believe" was "The best magic show in the world." Naturally, the organizers declined the offer. Angel's team then tried to compromise by saying that a testimony of "The best show on the Las Vegas strip" would suffice. Still, IMX refused. So Angel revoked his offer.
In my opinion, this was a classless move.
To add insult to injury, Angel showed up to IMX during the last days to get footage of himself "supporting his fans."