Help with fnStateSaveParams to clear visible column saved state

Justindfunk

My scenario is that my list of visible columns changes based on a parameter associated with the current user. With standard state saving enabled in 1.8, the visible columns do not update when changing users, instead it just continues to use the first column set that was loaded. I tracked this down to being related to the state save; turning it off allowed the proper column set to display. However due to my need to preserve column filters I need to have state save on, and with 1.9's inclusion of fnStateSaveParams, I'm wondering what values I need to clear out to get the visible column list to load fresh each time?