It happened about 5 years ago. As far as I could tell, the original club was entirely in the grip of the owner, who seemed happy to accept the match day takings from crowds of 500 but not to allow anyone else a say in the direction of the club. I can't remember exactly what the catalyst was but from memory there was a mass boycott of home games halfway through a season, followed by the formation of a splinter club Clapton Community FC the following summer. The original club lost the lease of the historic Old Spotted Dog ground and ended up playing at Newham Leisure Centre in Plaistow, while the new club joined the Middlesex League and set up home on one of the outer pitches at Wadham Lodge, where Walthamstow play. The new club secured the lease for the Old Spotted Dog but I think they're still in the process of bringing it back to the required standard after several years of disuse. They're currently top of their league, while the original club is likely to be relegated from the Essex League, which I think might see them at the same level in the same division next season.