Alec was a loose cannon - an alleged alcoholic who had some eclectic pastimes and was also not that great, or perhaps reliable, a player.

No brainer JBJ wanted him gone. He was/is a control freak.

Bare in mind, during that era, JBJ would only agree to photo's being used in magazines that HE had vetted first - Ross Halfin, a well known photographer was apparently banned from taking pics of Jon because they made Jon "look old".