A bit of High Noon in this....
The film packs more of an emotional punch if it is Sheriff Freddie Heflin alone against the crooked cops. He does get an assist from Figgis of course but it is the heroic actions of Freddie played brilliantly by Stallone that makes the film.
For that to happen his support has to slink away. Both his deputies despicably walk off when he needs them the most. Just like Gary Cooper's character he does his duty and like Cooper's character he is motivated by the prize at the end. A beautiful woman.