Assuming he knows this to be true, Dyche holds a very powerful card.
Despite everything, he has done a good job under difficult circumstances to keep us up and, if he were to resign before the ownership issue is resolved, it would leave us in a very vulnerable position.
If I were in Dyche shoes, I would be demanding a new contract by a certain date or I will be walking. Moshiri would loathe to be in that position and, although many want him gone (and reasonably so), I really fear who the club would be able to attract if he left right now.
Sometimes, better the devil you know (until we have new owners, at least).