And then once you've got him in the van, you shoot him full of sedative.
Containment almost worked using just Nikki, throw a sack over his head and that might be all you need.
Reyes is probably kicking himself that this one got away (for certain values of got away), but they didn't have full knowledge going into the snatch and not being able to hang onto him was one of the things they hadn't worked out. More of the team or more cops might have made it work, but might also have blown the ambush.
I don't think anyone has raised it, but this is two arrests that have blown up in the team's face in a row, with three dead. That isn't going to help Reye's reputation with the people pulling Celentano's strings.