Read the rest of the branch from my opening post. I'm not necessarily claiming that as my hypothesis, but the one that seems common among the replies.
Basically, bottom line is people care about monthly payments. Interest rates going up means that the same houses have higher payments. You /could/ expect that prices going down would be enough to keep people happy to move. That is indeed what I was asking at the open.
However, stock going down means existing values goes down, which is just another form of trap for people. Specific trap being that many moves are leveraged on older equity, but to get out of the old loans will now require more cash.
This is largely because older equity was also under a leveraged loan. In markets that are not so heavily loan driven, the existing assets are straight forward to manage and convert into down payments on new properties. Housing is specifically not that.
If I'm misrepresenting that, please correct me.