My advice, for what it is worth, but without planning it worked well for us, is, go for a sort of option two.
Find out where the memorial is being held, don't call an elder, any bro. or sis. will know, preferably one who is a bit irregular themselves, go to the memorial, and one meeting afterwards, and then NOTHING.
The one meeting afterwards, as close to the the memorial as possible, re-assures them you were not just "crawling out of the woodwork ".
Lazy Elders, and others, will not realise you are not there for six months I bet. By then you have the moral highground, nobody has bothered,so where is the love ? etc. etc.
Any other course flags things up WAY too early, this is all assuming that you wish to achieve a fade, and minimise confrontation.
If you do not care what happens, just stay away forevever. And follow the tactics other posters have suggested.
I wanted to achieve a fade, and doing what I said above did it for me, I aint DF'd or DA'd and nobody calls on me or 'phones.
BLISS.
Love
Wobble
p.s Let us know how it goes, good luck. ( I did the above in Spring 2008, after 58 years in)