The Hollywood talent manager’s friends tell me that she was going to a party in Malibu last night when she was struck and thrown by a passing automobile on Pacific Coast Highway.  “She is at UCLA hospital in critical condition but hopefully stabilizing. The doctors said she’s a real fighter and in great physical shape so they’re optimistic,” a pal tells me. I’ve long known and admired Joan, the CEO of Hyler Management, which is why I’m posting this.