I think the Sox are mainly just concerned with winning right now. They're like 7.5 up on the Yankees in the AL East and only 1 up on TB. Sox don't want to do something stupid and brawl now and lose guys to a silly injury when they should be going to the playoffs if they can stay healthy and play the way they have been.
As far as the pitch. If it really was about PED's, that's some faggotry to me. What is Dempster trying to prove? If you have beef with a dude on that level, see him face to face. Not where you have a huge leg up as far as protection being on a field like that. See how Matt Kemp went and talked to Quinton after he took out Greinke AFTER the game in the hallway. He let him know what he thought and if he wanted beef he knew he could get it. That's a leader of a team move. The Dempster move was a bitch move to me if it was about PED's