The Mozipedia book tells a different version of the "Spencer fax" story. In this version of events Spencer is with his wife when the fax arrives (not a boyfriend.) I've taken the liberty to type it up, here's what the book says:
Morrissey was angered enough by Cobrin's financial grievances against him to send the drummer an abusive fax message. "The fax came through and my wife, at the time, picked it up first,' says Cobrin. "She said "I don't think you should read this." When i read it, i stayed in bed for a week. I couldn't move. There's no point repeating what it said because it's all water under the bridge now, but at the time it wasn't trivial. That was it, he'd crossed the line. It was the cruelest thing you could say to anyone after working together for so long. It still upsets me, but i realise that I'm one in a long line of people who've been treated like that. If there's anything that gets Morrissey upset more than anything else, it's money." A second fax followed. "A much longer one," claims Cobrin, "but there was no apology. It was just more blame, more pointing fingers and being very childish. That was the end of it. I was persona non grata after that."