Bad Bad Summer tweed

In my avoidance to recap my strange weekend I forgot to tell you about one of the most important mishaps. The Limey Summer Tweed tank decided to have a mind of it's own. I bet you didn't know that Summer Tweed "grows". Yup...grows. It may be my fault because I only did a steam block and not a full wet block. As I was wearing it Saturday the bottom decided to flair out and start rolling. I was horrified. I tugged at the thing all day. I'm in denial because I think I'm going to have to rip the whole thing apart and start over. Does anyone have suggestions on how to rip out and re-knit the bottom only?