Very true, and the methods I know for altering memory work best to overwrite or erase what was already there; not as a preventative measure. In addition, I am not even sure that they would serve their intended purpose here.

Sadly, I do not know if there is a method that would keep up us from destroying our own research; any passwords would presumably also be known to our cursed selves as well, and requiring a second person to 'speak for' the uncursed nature of any member could easily be sidestepped as well, should a similarly cursed person be willing to vouch for the cursed individual.