It does seem to have come to a head. The Tories have actually not managed to unite behind a leader for any sustained period whilst being the government since the late 80s, which is an amazing stat really. 2010-15 was different because they were in coalition, so the nutjob wing didn't have the same influence. They've always had this reputation for pragmatism and being the natural party of government, but this sort of behaviour has been in evidence for decades now.
It's interesting how little backbone so many of them have though. Anyone with a majority of less than 10k knows they're probably out on their arses, and in most of those cases they can't delude themselves they'll get back in the next time.