Evan
I did pull mine out - it just got too big, but it was a wonderful plant- especially for fall color. Mine was all of 5ft across. I never had any problems with it flopping, but I always cut it back severely - too the point where I often wondered if I had cut it back too far. I must say though, MD loved to be cut back. I would see little green knobby new during the winter months when I would take my walks into the backyard, missing the gardening season.....