"They should get a refund from whoever they did consult, all of these worlds are horrible and everyone back home is going to be completely appalled. Anyway, they've got Melkor a nice VR setup where he can engage in as much imaginary torture and wanton destruction as he pleases, even if I presume this to be full of outright lies - and I'm not assuming that, but I'm giving myself lower confidence than usual I'd notice if I were being lied to, since you have mes - anyway, unless there are some sharp limits on their capacity to act outside our home dimension no one is going to die and definitely no one is going to be executed.
And we might need some kind of war crimes procedure given how many war crimes there are, but they'll firstly make a point of not acting in any way that would have disincentivized you from asking them for help and secondly think you made a sensible call and thirdly don't believe in executing people at all.
I'm not promising they won't overreact - I don't think so, but it's been a hundred forty Years and we've never dealt with anything like this - but. The worst overreaction I could conceive of would be putting bounds on the making-stuff and keeping you in a dimension where they could enforce those."