While Jason melees with his own skeletons, we cut to action elsewhere.
We don't get too many true "fight" sequences in films these days. That wouldn't be such a bad thing, if the fight sequence hadn't been replaced with the indecipherable scrum and jump cut chase.
A fight from the olden days of Hollywood would involve a lot of choreography -like tossing a skeleton over your back.
Good cut. Energetic.
And the action spin us around.
In animation, the simplest way to determine a new scene is if the background changes -and determining what constitutes a scene is of prime importance to managing production.
When you look at stills like these, shot by shot, you can see that. It also helps to visualize the sequence backwards into storyboard.