If all Prahlad did was ask for them to review the tape, and then leave it to the floor, I'd agree. But he harped on it and basically accused Lisandro of being a cheat and a thief.
You can't bring physical violence, or even threats of it, to the table.
In a perfect world, I'd agree 100%. On the other hand, there are an awful lot of dinks out there who think its OK to say anything they want to you with no risk. I think you need to be able to let someone who's acting like Prahlad was know that he's close to crossing a line he may not want to cross.
But, maybe that's just my Klingon alter-ego talking.