In order for a repeat of that, the majority of present elected GOPers would have to leave and form a new party. Since I assume that you don't like the majority of them, no new formed party, by them, would be any better than the present GOP.
You mistake criticism of Bush as criticism of the GOP and conservative values. In my case, it's easy to support the GOP, because my Rep has gone on record opposing Bush. Here's what he said about the guest worker bill "The president obviously doesn’t think of Americans by passing the bill,” said Dana Rohrbacher.