Or at least I would hope that they aren't. It's pretty dumb to teach them to do that because all it does is cost them penalties that kill their momentum and it's not like they aren't going to get another chance to go up and hit the d-lineman legally anyway.
I imagine that they have a bunch of ******** on their line, and that's more than likely the problem.
Although Richt has allowed his team to do some dirty stuff before, so who knows?