Still unable to pass riders with steering disabled

I found the inability to ride around riders with steering very annoying so I disabled my Sterzo, Still with the Sterzo disconnected I am stuck behind riders doing considerably fewer watts. It takes a force of about 2w/g additial w/kg break free and pass.

Is this related to changes in drafting in my profile remaining in effect even though the Sterzo is disconnected?

Can I completely uninstall the Sterzo?