Excellent questions. Grover anti-taxers and the rest of Bush's political base must be dismantled to maximize neocon leverage on the upcoming election.
First they trashed the paleos, now it's the libertarian and anti-tax people's turn to burn at the stake. Some shots have already been fired directly at W. from the loose cannon crowd. Look for the assault to intensify. You may find this thread excellent background for understanding why/how anyone would do such a thing: Bush’s Coming Betrayal of the Evangelicals