OPQS should launch chavanel on the kemmelberg and then keep Terpstra back just so that if it comes back together, then he along with steegmans can help Boonen chase others and lead him out. Also they should make the race hard so that by the time Chavanel goes, there are not so many teammates left and some of the favorites may eventually have to do some pulls to get him back. Although of course you risk maybe letter someone like pozzato going away with chavanel and then having him drop chavanel but still it might work.