If I understand these folks right, they want NASA to take part in the repeat of an election without making demands on IEBC. Not even an audit of what went wrong last time. The Westerners are convinced the Kenyan does not deserve anything of the sort and want to get back to business as usual.
If I were NASA I would officially pull out, that way it becomes more or less official that Kenya is now a dictatorship. Participating in anything less than a transparent and verifiable election merely provides a veneer of legitimacy for autocrats.
Of course the jubilant would go ahead with the election and swear himself in. However with NASA in, he would still do the same thing, while claiming some sort of mandate in a "free and fair" election.