The whole cast is in open defiance over his firing. Push come to shove half of them leave the project and it's dead in the water. Vin Diesel has the Fast franchise, Zoe Saldana has 4 Avatar sequels coming out, Chris Pratt and Bradley Cooper can always find some mediocre rom com to star in. When even someone with as little clout as Bautista is basically on strike, it just show how stupid their response was.
Not that I in any way, shape or form condone Gunn's tweets, but assuming that he has no history of child abuse, is repentant and willing to apologise/make up for his previous comments, it is hypocritical to fire him while employing woman basher Depp or previous serial substance abuser RDJ.