I don't know of a way to hide it, but you can 'reset' it, via the Sacrifice virtue: viewtopic.php?f=18&t=1048
While you an't directly turn on/off the title (Glorious, respectable, dread....), you can turn lock your karma to keep it from increasing via the in-game command "[karmatoggle". Also, you can choose which skill you want displayed by which skills are pointing up. If a single skill is pointed up, then your proficiency in that skill is all that will show. If multiple skills are pointed up, then the game will decide which one to show. If no skill is pointed up, then no skill will be displayed. (This does not effect the myRen website.)