That's what it looks like. Pressing any of the buttons results in... nothing. Nothing happens when I press a button (talking about the B, I, U etc. buttons).
Open your db in phpMyAdmin, click fusion_settings [if your prefix is fusion], click browse to open your site settings table. Site banners are the 3rd and 4th fields, [sitebanner1 = sitebanner2]. Edit the table and remove the offending code [leave the sitebanner tables blank], save it and you're done. :D