The Republicans are pissed because they believed Rove had made a permanent Republican government. Then, it collapsed around their ears and they never really saw it coming. The fall of their equivalent of a Thousand Year Reich left them dazed and confused.
They are currently leaderless. I'm guessing that no one wants to bet their political bankroll yet by assuming the responsibility for a party of the lost until they at least find some direction.
All they can think to do is attack and obstruct, hoping to strike a cord somewhere that will demonstrate where they might gather strength. Flailing about like a blind boxer.
As far as I've seen, they have no real alternate plans. They keep saying they do, but never really present anything of substance. A point here, and a point there, but no plan, no agreement amongst themselves.
Gathering the groups of "single issue voters" is not enough anymore. Too many young people are in the mix now that reject the idea of single issue voting. Besides, they have seen how ludicrous some of these issues have been made by the past Republican leadership. Their actions regarding Terry Schaivo alone made them look like clowns on the "right to life" issue. Bush's own record of capitol punishment was pretty hard to shoehorn into that same policy. Claiming that gay marriage/unions would destroy traditional marriages was a fool's errand. They made a joke out of their "States rights" issue by demanding Constitutional amendments for far too many things, even silly ones about flag burning. Any issue that they made a big deal about came down to religion. Forget common sense, science, or fair play. Ten Commandments = religion, abortion = religion, anti-gay = religion, creationism in science class = religion.
Republicans no longer have enough to say that their stuff is better than their stuff. They need to get some new, improved stuff to get back on top. And so far, they haven't figured out what that stuff is.