This has caused quite a stir this hand, as I have already been involved in discussion about it. I fully support Thomas Kremsler's actions by making the min raise and informing the other player about his previous. Once the hand was over, I would of issued the player with a stern penalty, so stern that it meant he lost AT LEAST what he had won in the hand, but not enough to remove him from the tournament. I once issued a penalty that crippled a player such that he just limped into the money and no more, which I felt gave sufficient warning to other players that such conduct is not acceptable. With regard to dsq'ing the player I can see valid reasons to do so, but I much prefer the crippling blow myself.
Regards
Stuart