It's unlikely the guy meant it, and people can act up pretty badly under stress, so I think he should be given another chance
Hopefully they'll let him re-release the game on Steam at some point.
If you were the owner of a restaurant, and one of your busboys threw a fit, smashed some plates, then came up to you in front of both employees and customers alike and proclaimed he was literally going to murder you.. Would you send him home for the day or fire him?