I know that sucks, but it's a good, and sound, business decision. It has nothing whatsoever to do with feelings.
I most COMPETITIVE businesses, it's best to cut ties as soon as you are aware that someone is planning to leave.
IF Prock stays, and Force loses, the questions start: Did Force drop the ball, or did Prock just lose interest?
You don't need that kind of crap going on at that level of competition, Force's decision was a good on, as the professional he his, I believe that Prock knows and understands that, and most likely expected to be relieved of duty as soon as he told Force of his plans.