an urban legend that hasn't made it to the urban legends sites yet?

[acroyear]

Some guy, whose writings (about Disney) I normally respect, has some story about how Peter Gabriel's "Solsbury Hill" was written after he had spent some time in a mental institution following his divorce caused by his having an affair with Kate Bush.

Nevermind that

• Kate would have only been 18 at the time
• Nobody had heard of her except David Gilmour and Andrew Powell (of Alan Parsons Project), then recording demos of her under a contract with EMI
• while Peter had only just left Genesis and signed onto Atlantic's ATCO label
• Peter was still happily married to his first wife at the time (and would be until 1987)
• Peter has never spent time in a mental institution
• he did take a "break" between Us and Up (aside from doing the Ovo project and some film scores - he did few live appearances during that time), but the divorce was well and done by then.
• neither "Leading a Normal Life" nor "Shock the Monkey" were based on personal experience.
  

*sigh*

where do people get this stuff?  He claims it's "not exactly a secret" but google ain't coming up with didly for this one.  5 pages into a search someone suggests that they recall something about an affair during the recording of "Games without Frontiers" but nobody's confirming it.