My core group of friends is on the verge of collapse should I abandon them ?

Yes. Its time to move on and find new friends... I know a group like that.. I'll refer to them as "Team Toothless" for the sake of anonymity... They are caught in a web of lies and deceit and are turning on each other faster than Hep C destroys A liver.. This group of repulsive banjo playing inbreds have mistaken petty self serving alliances for friendship and used the hatred of a common enemy as the glue that held the friendships together.. It was doomed for failure... Friendships are like houses.. A house built on mud looks nice for a while but cannot support its own weight and collapses, But a house built on a strong foundation will last forever..