Your not really going to remember anything during and after that much LSD is ingested friend for a fews days after, you'll probably have trouble even remembering how to speak English again.
Your going to have to fight to remember any of your past and rebuild yourself with the help of all the positive affirmations your baby sitters throw at you during your experience.
Good luck finding what you seek
Namaste
Hah... funny that.
Just made me think of that old psychological trick, break a person down, build them back up.
In the army, lower ranks are screamed at, humilated, their sense of indivuality and self worth worn away. They are then "rebuilt" in the image of a soldier (and for years after excuse overbearing and obesessive behaviour as "the training". My dad was in the army

). The same is true of criminal gangs, colleges and psychotherapists chairs. Initiations of various kinds, aggressive, perspicatious and emotionally painful questioning, the tears etc.
Or worse, electroshock therapy.
Anyway I digress slightly, the purple haze does that to me. I can't help but think such massive massive overdose (without medical attention, weathering the storm on willpower alone) would indeed take a long time to recover from, for weeks perhaps, you would be cared for by your new friends in the family. A well organised group that demand respect, with strict rules, important traditions, working in seriously dangerous territory, dealing with big time criminals, contant DEA pressure. They certainly can't have somebody they can't trust 100%.
I'd say the weeks after such a completely ego shattering experience would be the perfect time to mould your new member into the right sort of person the family needs, they'd be a blank slate at first. I have no idea what a dose like that would do, but I can't help but wonder if "learn to speak English again" is that far off. I don't wanna say brainwashing, but if I wanted to sound sensational I could infer it.
I do make this sound sinister, but you could easily portray it in a nicer light, more peace and love, this one was just more cinematic. Still this thumbprint tradition can't have simply been the whim of a man many years ago with too much crystal LSD and some foolhardly prospective gang members.