Put Me In Coach

Now I've heard of arguments with your coach, but this is a bit extreme.

NFL Security has interviewed Rams coach Mike Martz and offensive tackle Kyle Turley about an incident during which Turley allegedly threatened to kill Martz, sources have told ESPN.
Turley

Martz and Turley allegedly engaged in a shouting match that culminated in Martz filing a report with NFL Security regarding the alleged death threat, sources said.

The argument began after Turley, who's on injured reserve after re-injuring his surgically repaired back early in training camp, heard that Martz questioned the tackle's dedication to rehabbing his injured back. Turley decided to confront his coach.

And knowing Kyle Turley (a notorious nutjob), I would have taken this threat very seriously.