The 62-year-old superstar sparked a war of words with Baker by posting a letter on his second wife Heather Mills' website, claiming he sacked Baker last year (04) because he was becoming increasingly unstable, not, as many reports claim, because Mills told him to distance himself from Baker.
McCartney writes, "The actual truth, which I had been trying to spare him the embarrassment of going public with, was that he had gradually been getting more and more unstable over the past few years.
"I tried to let him down gently but it was my decision alone to let him go as I didn't want that kind of instability around me. It was nothing whatsoever to do with Heather."
But Baker responded to the allegation yesterday (06FEB05) saying, "If I'm unstable, maybe that's because somebody had driven me to that."