Are we safe in assuming that the deal was done without legal advice, or due diligence (water tight contracts don't exist...) or clear expectations from all parties? Maybe HRH is cutting up rough because Kev didn't make it clear that HRH was expected to pick up half the tab while we got relegated and had five years in L1 for example.
A lot is made of the initial meeting between them, but random and chance meeting happens all the time in business. It's called networking. I've done good deals with people I met randomly, sometimes in unrelated circumstances. That in itself doesn't mean that it was poorly thought out or that what followed was done in a casual manner. You shake hands on the deal in principle, in the bar at the airport lounge or by the swimming pool and then you send them a 30 page contract when you get back to the office. Nothing wrong with that.
What we have here is a falling out, a big falling out, in that way that you hope it doesn't happen, and unfortunately, winning regardless of collateral damage is the only thing that matters now.