Let's say they do go 1-11.
What do you do at that point if you're David Williams? I mean, you HAVE to fire Mason, but who do you replace him with? Who would take that job? The entire SEC is even more competitive now than it was in late 2010 when Franklin took over. UT has top 15 talent now, soon to be top 10, and even UK will be a tough out in the future with Stoops at the helm.
There are no recruiting advantages for Vandy--in fact, they have major disadvantages. Getting the roster competitive again would require a miracle, and there is no stocked cupboard of redshirted 3*s like Bobby Johnson left James Franklin.
I think Vandy's best option is to find a coach who runs a gimmicky offense that can, at the very least, help them win their OOC games, or find another old coach near the end of his career who knows how to build a program and can rebuild the roster over the next 3-4 years.
If I was Williams, I would call Mack Brown and offer him a huge contract. He's washed up, of course, but I think he could make Vandy a bowl team again and at least stabilize the roster over the next 5-6 years before he retires for good.