You can see the remains of its crispy brown skeleton in the left half of the container. I'm still not sure what killed it. The leaves started wilting quickly and then turned brown and crunchy. The stems also changed, losing their solid feel and changing to a hollow feel. There are a number of different things that can cause wilt in this neck of the woods. I guess I'll never know the official cause of death.
The amazing thing is that the tomatoes that were on the vine continued to ripen. I think I ended up with three dozen or more 'Black Cherry' tomatoes all told. Yum!
I removed the plant from the container this week to give the remaining 'Hillbilly' tomato plant more room to breathe. It seems to be working. The long-green tomatoes are now starting to blush. Can't wait to taste those.