The rule that has been quoted here a couple of times says that discs cannot be tested ABOVE 77 degrees- i.e. you can't perform the test at a temp so hot that your disc is half melting. A lot of you seem to have read that wrong and gotten the opposite impression. Also, I didn't see any mention of a TD being able to test a disc during a tourney, the quoted rule indicates this type of testing should be performed on a disc mold to ensure the legality of that mold, not on individual discs. All of you saying how this rule would be unenforceable seem to have missed that point as well. Sorry for sounding douchey, but I think if people understand the rule a bit better they may revise their opinions.
As for my opinion, I think it is kind of strange that the disc most recently declared illegal is a putter, which most of us can agree will cause the least amount of damage, due to both the lower speed and fatter rim, which helps distribute the impact. I would much rather take a stiff Wizard to the head than a legal Firebird (why does that sound dirty?). I am not sure if I am fer or agin the stiffness rules, but I am of the opinion that if the rule is enforced it should be enforced consistently.