I have heard of them. But seems to me if this particular concern troll you speak of likes Thune more than Palin, yet has stated he still will be happy to support Palin if she wins the nomination, that should be satisfactory.
Yet I have been trying to prove my accusation of “concern troll” and that Thune bit is part of that. The contradictions support my claim, that is why I worded that post as I did.