Did they or didn’t they?

According to this article on Rolling Stone’s website, the website Momomentsintime.com is claiming the Beatles reunited (twice) in the seventies but the reunion ended in acrimony. Beatles management claims that this is a load of bollocks. I know that Macca and John Lennon did jam together at the Record Plant in LA in 1974 but I don’t think this reunion thing actually happened. Or did it?