No clean way. Some are more of a "soft landing" than others, (such as Cappytan and _Morpheus mention), but all of those methods involve at least some playing of the game. Thank god I was not an MS at the time I left, as I could not stomach the charade.
An alternative to that level of charade is to just miss some assignments, stop FS, and miss more meetings than usual. This will draw attention, but not so much along the lines of them suspecting you knowing TTATT. Rather, they will be pressured to remove you, since their own rules require you participate in FS, attendance, and are reliable of handling assignments. Yes, they will try to do everything possible to prevent that, but eventually they will have no choice than to force you to step down. MS/Elders that don't know TTATT do this all the time.
d4g