Sounds like David's been just a little upset about his ouster. Or he's trying to get jokes out of it. Jokes that sound like threats. Completely unfunny threats.

Warning: partially censored terms ahead. Approach at your own risk. Approach David at your own risk too, 'cause he's a jerk.

http://www.realitytvworld.com/news/david-alan-grier-apologizes-for-post-dancing-with-stars-tirades-8809.php

Apologizes, yes. Means what he said? Doubt it.