Things like this happen period, you just don't always see it. Alpha types will get riled up and stuff like this happens in the locker room and practice more than most people think.
I witnessed a few teammate fights in High School and then at the college level. It really is as simple as it happens, not what you want to happen in a game when they should be focused only on winning.
Guys on the same team fight, guys on the same team don't like each other and aren't always pals so to speak.
I wouldn't read anything into it, emotions got the best of Ramsey and who knows what Rapp said to him. I wouldn't worry about it.
I find Stafford's turnovers way more concerning than something emotions flaring during a big game.