Complex sentence: Spike pauses the chase, instructing the cat to remove the horns from his feet, and when the chase resumes, Tom successfully hides in a corner as Spike rushes off in the other direction, not knowing that Tom got away again.
Split into simpler sentences: Spike pauses the chase, instructing the cat to remove the horns from his feet. When the chase resumes, Tom successfully hides in a corner as Spike rushes off in the other direction, having failed to realize that Tom got away again.