Asking should be enough.
Having someone research you and your loved ones by name upon their death, and then use actors playing you, and using your name in bizarre cult religious practices is naturally disturbing, and Mormons know that.
I find it a hostile, passive-aggressive, cult practice and it is disturbing. We and our families are the people that are being exploited, us, individually, by name, we have a right to be offended, and to ask someone to leave us alone.
I have quite a few relatives in the ground and if some religion tried to baptise or rebaptism them, a fist would come out of the ground and bloody their noses. So it doesn’t bother me, but it could get those rebapizing some bloody facial parts...We don’t take kindly to being disturbed while sleeping...