There is no proof, provide proof and someone will fuck their site to the ground pretty good.
First we have their thread in the link in the OP.
then a few hours later, FP starts falling apart, later on the Labs ALSO crash, and then garry.tv goes down as well.
Any FP related website is being crashed into the ground and mutilated.
If this is not the thread being made into a promise... then hell, that's one hell of a coincidence...