I'm sad to see a fighter I like go, but I'm not surprised he was fired.
If you go before a commission that regulates you and your employers, then publicly call one of the members of the commission a "bitch" it seems likely that your employer would fire you.
Here's some audio for anyone who wants to hear. The exchange is at about 6:50 and is about a questionnaire. Mo didn't list this supplement or his knee injury.