Thesan Capital were the investment house, led by Jose Manuel Garrido, yes. And yes, well remembered. Essentially I was told that the initial deal was Donald to be a minority partner (25%), with someone else (now it makes sense that it was one of Methven or Sartori) holding the other 25% vs Thesan's 50.1% 'majority'.
At a very late point (late enough that I was being asked for a fan view on various issues and Jaap Stam had held informal talks to be manager) Donald demanded they split it 33.3% each, which Thesan clocked would mean that he and Sartori/Methven would be aligned against them as the true majority in any board situations where there was disagreement. They had loved him at the start, but this heel turn that meant they were going to end up being the makeweights soured them on the whole deal enough to walk away.
Easy to think they could have done it on their own, but Donald was meant to be the CEO. They probably thought the cost of starting again with another CEO was enough to just chalk it up as a loss and hope for the best.
I have asked a question about debt write-off by Short. Not sure whether it can be answered now or not, I guess it's meaningless enough now that if he ever knew, he'd probably just tell me