100%, he's adding insult to injury. No one said he's a classy guy.
He protected his future assets, made sure no one messes with his RFA negotiations, made sure no one makes a less than a serious offer to his RFA players that will make him pay more than what he's comfortable with, hurt our center depth if we don't match, screwed us financially if we do match, made a bigger fool of our GM than he already was and sent a message to the league that he's a petty prick and will go to great lengths to embarrass you if you mess with him.
He didn't jeopardize his cap structure, no player on the Canes is going to use that as a benchmark, the message behind it is clear as daylight. He made sure of that.
It's a brilliant move and being a dick about it with the $20 and copy/pasting the Aho OS press release is the cherry on top.