Philodromus dispar?

A tentative identification only on this little chap which was wandering around on my living room ceiling. It's a male of the species if I'm correct and given that he has one less than the optimum number of legs for a spider I don't really fancy his chances of fathering more little philodromuses.

Just to reassure all the arachnophobes out there, his body was no more than about 3mm long :-)