He needs to be dismissed. Fines? Eh, so what. Who cares if you relegate his time to the back of the pack. He's not a GC contender and is only on the team to lead out Cavendish.
What he did was stupid and dangerous. Dean had led Farrar up to Cavendish's wheel, held his line, and was passing Rehshaw. What he wanted was a line of him, Renshaw, Cav, Farrar. He would have held pace and moved back to let Renshaw lead out Cav. The idea was probably to give Farrar two guys in front to draft off of, saving energy for what would hopefully be a last 100m pass of Cavendish. Smart move that would have basically had another team doing the work for your sprinter. Renshaw head butted him to slow him down when he realized he was getting passed. Then head butted twice more to knock Dean completely back. He claims Dean stuck out his elbow and that if he had done the same, everyone would have crashed. That's bogus. Guys bump each other all them time in the sprints, and Dean hardly was looking to make contact. He was just making a pass.
What he did next was worse. He glanced over his shoulder, saw Farrar, and moved into his line. He almost forced him into the barricade which really would have caused a massive crash. It was a total ***** move. I almost think they had to dismiss him because there would certainly be retaliation. That kind of crap isn't wanted or needed in the Tour, and he needed to be sent home.