I took mpk to mean the timing of the Interpol Red Notice, not the allegations themselves.
I have no idea whether he's guilty, but he should certainly return to Sweden to stand trial.
He hasn't been charged with anything.
If you're innocent, there's no moral obligation to stand trial. The onus rests with the accusers to make the case. It may or may not be in the accused's best interest to offer a defense, but I fail to see how he's bound merely by the accusation.