I do not feel the need to disavow every single stupid thing a Christian group has ever done. For one thing, I'm Catholic, so most Christian sects, denominations, etc, have already disavowed me. So when other folks in other Christian groups do something stupid, I generally don't care.
Like, for example, when a creationist museum that has what appears to be a Garden of Eden setting … with a Velociraptor off to the side.
Thankfully, I can usually say, “Yeah, that's stupid,” and move on. Because it is stupid: even ignoring that human beings and dinosaurs were separated by about a few BILLION years of development, you'd think that the museum designer would have picked a dinosaur that was more friendly in appearance, and what wasn't the primary adversary of one of the top grossing films of all time.
So, with idiocies like that, I don't care. It's not my church, not my problem.