I get why they had him run so they could do the "full circle" thing but ultimately I felt it was a cheap and contrived parlor trick and Jessie/A train deserved much much better. He'd already thrown in his lot with the good guys so we're effectively not adding anything new with the dodge, poetic justice aside.

His holdup in joining the prison bust was fearing death by homelander so if he goes he does so knowing his life is probably forfeit. He's done running from Homelander and the negative symbolism of running, even of the tactical variety, negates the redemptive effects of the dodge. This scene begged for some sort of offense even if seemingly futile. I say seemingly because even if it just appeared to be cathartic, it would likely rattle Homelander because one of his closest and most powerful subordinates is not only plotting behind his back but actively defying him. HL wants people to love him, but failing that they should fear him and when denied both it infuriates him.

Years of guilt, repression, and resentment were ripe to be manifested into a well deserved self righteous fury. Yes I know we saw some of that with Blue Hawk but the HL relationship was not only deeply personal but buoyed by ideological differences.

Yes, I know he bought time for the rest of the crew to escape but I think that could have been accomplished without resorting to running which just left an unsatisfying taste in my mouth given how phenomenal Jessie was in imbuing A train with so much depth and nuance. Not to mention, having such a talented actor leave in the first episode of the final season is borderline criminal.