I'm gonna try to summarize what I think has happened.
A couple of years ago, someone started writing ''snakislaw'' on this site and waaaay too many people didn't understand that it was a joke/meme and now people have spammed the forum with that shit soo much that it has become the truth throught repetition alone. There is no solid proof whatsover of stan being toxic. Everytime I ask someone that writes ''snakislaw'', ''why do you think stan is toxic?'', they either dont answer me or simply tell me that they dont know, they just write it because they have seen others writing it.
Optic had a team with both stanislaw and daps in it and suddenly wanted to make changes. First they kicked stanislaw, only to kick daps 1 or 2 weeks later and brought stanislaw back. They then signed mixwell and went on to win E-league.
Liquid signed stanislaw because he had been good in optic and they were looking for a new 5th. He didn't make Liquid better and they kicked him. No harm done, you can't always be good, it was still worth a try.
As I said earlier, I think i read in an interview or listened to one when NRG were at a tournament (maybe the first one with stanislaw) that the players felt like daps had done everything he could and they needed someone/something else to take the next step and become stronger. Stanislaw was once again available and was signed (probably because there was nobody better available). They then went on to win ESL New York.