if we go back to why he ended up leaving,its at least partly because they did not support him in his accident issues
in fact, while they were meant to travel a day after early to brazzaville to shoot some parts of taboch's song roulé adada went to nightclubs and got very drunk and when driving back he hit a car with all the passengers injured and gone through weeks of treatment
and he was arrested only to koffi or people around him bailing him out, and from what i was explained from kin the other guys kept away a bit for two reasons first they did want to make public support to him to avoid bad publicity for the group as in kin people started to say they are all aware and adada did it on purpose because they had to sacrifice people to give a boost to their album
and second they were growing fed up with how stubborn adada is,they were about to get a little primus contract(you know those who are not on a hefty contract but who are associated to events here and there like for example the traditional groups where beer sponsorship was on top of its game) and while they had agreed at group reunion,he messed up the deal by going to see some primus guys to say they should deal with only him so that he gets all the money and not money split in 4 for the 4 co-founders and they lost that business which went to one of those group who interpret songs of various artists( and now he is tries to get again that deal on his own)