Nope. There is nothing in advanced settings about 'hiding toolbar for all users' and I never get to the page that has the radio bullet with Plain or Rich Text.
The only checkbox under advanced settings is something about Tokens.
The only way a user can get the full editing capabilities as me, is if I assign them full editing rights to the PAGE and not only the module. But then they can screw with everything else on the page (and my clients will do that)
When using the HTML module I usually get a link on the bottom that says "Edit the HTML" but without giving a user full rights to the page, they do not get that. They just get a little square at the top with a pencil, which when you click, you can edit in plain text format. With no settings or options.
Any other ideas ?