I don't find the current WT stance on homosexuality to be particularly hatefilled, in fact if i recall correctly it was sympathetic in a WT kind of way - pitying. In fact I recall the delighted response of one gayJW messageboard I read. Nonetheless I think that the view that homosexuality is a sin legitamises some of the members' hate for homosexuals.
While some of my family wont associate at all with me they have as their best friend a gay, but celibate, JW who spent a number of years out (Sept 11th brought him back, ugh!). Witnesses are often pretty far behind the times on social issues (understatement) and while I don't ever imagine they'll change their view on homosexuality I think that car groups will become less inclined to spout hate as more gay witnesses come out.