I'm really sorry this is happening to you and your comrades, I've only known PSL comrades as consistent fighters for left causes who def earned a place in our local struggles.
My group went through some strife in the last few years, and it def leaves a mark. I agree with calls for the membership to organize independently of leadership structures to right the ship. No positive way forward is going to come easy.
Best of luck and solidarity to you and your comrades.