Apologize?Sami is tryna help Jey and by proxy Roman.
And originally he sucked up to the Bloodline because 1 he saw everyone getting jumped and didn't want it to be him, 2 he was having an issue with someone else and asked Paul Heyman for a favor [their help] in a sense he owed them, did he HAVE to give his undying loyalty..no of course not, but during the original Bloodline run would you wanna be on the opposite side of that?
Like @DaylitoJames said Roman does NOT feel bad for anything he did, he hasn't even apologized to Jimmy. Jimmy just doesn't wanna stand on his own [proven by getting jealous of Jey teaming up with Sami] and immediately falling back in line with Roman since they once again have a common enemy.
Roman did exactly what he was supposed to word to AMS