Well its kinda complicated and I don't know if I interpret it right!
Spoilers!!!!
First I think the bodies where Chase's friends and possibly himself too! A possible vision of the bad ending of Jenna's route. The shed I really don't know.
The maggots where to show that TJ was dead, and the creeping paw may have been the socketman reaching out to take TJ's body!
I could be wrong and crazy, but thats what I got from it.