They're seeing the same things in the NFL with the helmet to helmet stuff - to some players, the punishment is not a stiff enough deterrent.
This is where football gets officiating wrong, IMO. All of the rules are strict interpretations and there are very few times that an official can make a judgment call on intent of a player. If football officials had the ability to eject players because they felt they were intending to injure, football would be much better off.
Because here's the thing, especially with the last hit that set all of this off - if you get there late in fourth quarter with 2 minutes left and it's a 3 point game - I get it, you're trying to win the game. When you do it up multiple touchdowns, you're just trying to hurt the other guy. But they're enforced the same on the field.
If the SEC really wants to stop this - here's what you do.
1) Let officials make judgment calls and send players off for plays they think were inherently dirty.
2) Every Sunday or Monday, a group of officials get together and review at least every personal foul. If they judge it was a blatant cheap shot, they suspend them 1-4 quarters for the next SEC game.