Denise & Terry are wrestling with Henderson, all three in close proximity to each other. Denise then sprays Henderson with pepper spray. Although he'd have gotten the worst of it, the other two also s/ have reacted with their vision and breathing compromised, at least a little bit. Pepper spray by design is made not to have pinpoint accuracy but to spread out to insure the attacker is stopped.
After Terry (Steve Guttenberg) loses Chris (Brad Greenquist) after following him to a bar, he hides in his car in a side alley near Chris' home, waiting for him. When Chris arrives home, Terry drives slowly out from the side alley; a crew member wearing a red jacket and blue jeans can be seen through the rear window, behind Terry's car.