Thanks to the band being ill-prepared for the number of individuals arriving, it will be immediately apparent that the Fixer doesn't have a lot of means of escape. The music playing is something that he's been mixing for them, and he'll be sitting alone with a pair of noise-canceling headphones when the gang shows up to apprehend him. Any means of escape will be foiled rather easily: whatever drugs he's on means that he's not entirely cogent.

The rest of the band will go fully hands off. They're musicians, not metas. Leave them out of this. They will tell their pal good luck for wherever he's going, but they won't alert any official authorities. They might be helping him out, but they know he's in trouble and he'll be worse off if Fantastic gets his hands on him.

After Sephiroth and the others have the Fixer, it'll be a few hours before he'll be cogent enough for questioning. Is that what will be happening next?