Tactical Sub-Outs

[Titus]

I feel like quite a few games lately have been changed by tactical subouts by town slots. Nancy Drew v Titus was a particularly egregious example. It goes like this

1) Town player gets run up
2) Town player gets toxic
3) More votes pile on
4) Town player subs out

Two and 3 can occur simultaneously.

The slot then avoids elimination and instead becomes townfirmed to the rest of the game. This was particularly obvious in Titus v Nancy Drew because I, as a scum stump, would never approve toxicity or subouts in that manner.

What can we do to fix this problem without breaking games for one side or the other?