Mark they may have topped the plants because they were really tall.
Mine are like 2 feet tall and are just now starting to show new growth from the sides.
I do know from reading that even though they look leggy now they will be a big bush later on.
From my feeble experience I wouldn't prune or top them.
I have 5 of them and they are all in tomato cages.
A most strange plant, I am so excited about them.
I cant figure out why it has taken me so long to grow them.
One of critters is swelling in its husk right now, I cant wait.
Worth