I am not sure that it has a positive meaning here. It's difficult to know for sure, and perhaps more context would help. However, tossing someone back on the street is a negative thing - throwing someone out. When we give presents, we often wrap them in wrapping paper, and sometimes also with a ribbon which is tied in a bow. We don't say "wrapped in a bow", but perhaps "wrapped with a bow". My best guess is that the speaker wants to emphasise that the action of tossing the other into the street will be done very neatly, effectively and conclusively.

In a typical Hollywood ending, everything works out. All the loose ends (story lines) are tied up (resolved). In fact, they are tied up with a bow (happy). If a book ended with the main character, a soccer player, say a goalie, missing a key goal on a penalty kick, so his team loses, but along the way, he realizes that what's really important is his relationship with his son, the Hollywood ending would have him making the save, so his team wins, AND he gets a better relationship with his son.