Dallas really should keep this private. I actually think their concerns are legitimate but it's a failure on their part just as much as it is his. And they've now gone so negative if he wins a chip and Dallas crashes and burns with AD they're never going to live it down. But if they had just kept quiet and Luka blew his achilles they could have then done the "oh god this is terrible, but it's what we were concerned about and why we moved on" then and only then.
I feel like odds are all this BS is going to motivate Luka to do something about his issues. Mavs probably gave him the wakeup call he needed and LA is probably as good a place as any to get kicked into the fitness lifestyle (I know, its very weird we're talking about this with a professional athlete, but so be it).