Checked again tonight and it looks like there is suddenly an abundance of rooms available at the cash rate. In fact, there are three different room types and only one of those three even has an "almost sold out" warning.
Naturally, Marriott's "No Blackouts" fraud is still in full effect, so none of the abundant rooms are available on points.
To further drive the point home, the corporate phone rep all but hung up on me when I mentioned the No Blackouts policy.
I guess I'll be shopping around for next year's 91 nights.