My guess is that this sort of thing is what the more rational teabaggers have feared for some time, that the violence and purity that has bubbled just below the surface of this movement would lead to threats and intimidation - of other teabaggers.
The Maine Patriots, a tea party group with over 300 members run by Amy Hale, has shut down because:
I was cornered in the parking lot by 10+ people and told that bad things would happen to me if I did not give them the password and hand over Maine Patriots. Therefore, I no longer have control of Maine Patriots.
Amy
And this email that I was able to obtain:
It saddens me to have to make this announcement. Yesterday, a group of members of Maine Patriots extorted the passwword and took control of Maine Patriots' website. Amy is working with the parent site Ning to correct this. A police report is being filed.
Update: The coup leader, Jeff Cucci, explains the actions of his group. Seems Amy "wouldn't listen." She is also a plagiarist, controlling, and manipulating.
It's worth the time to read through the comments to Cucci's post.