That sucks! I've never been into cheering for or booing a players injury. But, in this day and age of the "flop", I do understand it.
On the other hand, I can't help but feel a little giddy about injuries to a certain southern team that hurt TRob. The image of his injury is forever seared into my memory, and to the team that did it... unforgivable. I hope G_d will forgive me.