If the GOP succeeds in this I will go scorched earth on them. Zero dollars to GOP fundraising. Zero votes for the usurper candidates. I'll probably vote for Gary Johnson (who I don't like much) for POTUS.
And, of course, continue lobbying SiriusXM to dump Beck and supporting whoever opposes Ted Cruz in the Texas primary race.
I suspect many million other rank-and-file GOP primary season participants feel the same.
I think you and I are in the same boat there; it'd be hard to pick a worse candidate than the "status quo, everlasting corruption" candidate (Clinton or another establishment pawn), so in that scenario Johnson's the best choice I know of who's running for president.