Blackballing implies excluding someone for reasons other than performance. A person who stops looking for natural causes becauses he wants to believe in supernatural causes is not going to be a great contributer to science. Behe and Dembski are prime examples, having contributed little other than demonstrating the futility of looking for limits to evolution.
Ohh? Well is the limit I cited in post 168 not a limit on the Darwinian paradigm? Especially since Darwin's whole book was based upon natural selection, "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life".