Oh no. "Thomas told me a few days ago that he'd been told to find someone in the school who was disloyal enough to send them to the camps. He refused to do the challenge, and hadn't told me of any further challenges."

So he really was plausibly recruitable - he'd had a "this is intolerable" moment.

But since he had refused to do the challenge, he would find an alternate one - especially an alternate one that seemed ludicrously difficult and all-too-likely to be deadly - very plausible. :(

I would say I hoped Padma and Seamus were expelled, or at least Padma, but I have to think that Voldemort would be pleased by her initiative. (And no doubt Lana will be too.)