I wouldn't worry about any move/contraction either. That's one of the big reason's there was a lockout, and subsequent change to the league's revenue sharing plan. So teams can at the very least break even when it kicks in fully. I doubt Stern or his protege, Silver, want to be the guys that took Charlotte's team twice; and if MJ for whatever reason did have to sell the team, he wouldn't sell it to a buyer looking to relocate. He's said before he wants to build something here long term that he could pass down within his family.
As far as this buy one, get one free season ticket deal - yeah, it's desperate, but it's still a good deal, especially if we land another lottery pick next season. The only place to go from here for the team is up, so if you're willing to invest in the team during a down year, hopefully you get to witness a resurgent year for free.