I think he should. We were standing right in line with the tackle and there was a great intake of collective breath around us well before he actually reached LR - it was obvious what was going to happen long before it did. It wasn't a tackle, it was an assault. The great pity is that the referee noticed it and booked him. If he hadn't been booked he would have been subsequently done on video evidence and banned for a month. Nasty, nasty.
I don't often wish serious injury on a player, but in the cases of mssrs. Kermogent and Barton, I am happy to make an exception. I hope they both soon receive injuries which keep them out at least as long as Rosenior, if not longer.