Semantics at work I'm afraid. The no split in the government is because the backbenchers, although of the same party, are not in the government. Such hair splitting is the same self-delusion that enabled the Tory Blair party to convince itself all was well and the nation rejoiced. It is normally a parrallel for the first half a dozen nails in the coffin for a government, but rarely so soon after an election.
We live in intersting times - ironically the Chinese curse of may you live in interesting times is now supported by their control of our economy - intersting times indeed.