Do what Tony says... if it's wobbly it will surely go down in a stiff gust. A mature plant is not likely to grow back cord roots in time or at all.
But do it well. Drive two tall stiff stakes deep into the excavations left from sucker removal.
Lash the pseudostem to them making sure that there's sufficient padding so there's no untoward abrasion. Distribute the wind load to the stakes from high enough up the pseudostem. Remove extraneous lower leaves that will serve to catch the force of the wind.
Mound the plant in successive layers of loose soil spaced days apart. Don't just dump a ton of soil on the base. Remember you've wounded the plant. It needs aeration at the wound to heal and to forestall attack by microbial nasties.
Don't water overly heavily for a couple of weeks - wounded plant again.
I hope this wasn't too wordy!
shannon
shannon.di.core@gmail.com