TBH I feel for the management/ownership. I know that's a rare view, but these guys put far more than can reasonably be expected into the club. They lose far more money than anyone could expect. I've no idea the opportunity cost of Rob Morrison spending what must be a serious amount of time on this, but it must be high.
They took a risk with Darije and it backfired.
Quite reasonably, they thought "let's learn from our mistakes" and signed someone local, and had the 8-week clause. Both are reasonable things to do.
It's a two-year deal. I doubt they'd think that things could have gone so well that other teams would poach the coach. But I think a combination of Rudan missing his family more than he expected, plus doing well meaning he can get a lot of money and get closer to his family, made this a bit of a no-brainer for him.
Let's look on the bright-side, if he goes to WU we'll have a true nemesis in that club. (Obviously the opposite of the brightside is that we may no longer exist past next year).