Idea for the cameo of Spiderman in Avengers: Age of Ultron

Post-credits scene:

Woman walking down the street in Manhattan on a dark, rainy night. Man comes running up from behind her and snatches her purse. She screams for help while the man runs away.

Purse snatcher turns the corner and all of a sudden gets pushed up against a wall by an unseen force, you hear a thud and an "ugh!" Switch to shot of thief's face, scared and looking upward, zooming out until you can see JUST below his collarbone where it's clear something is holding him up and immobilized against the wall.

Slow 180 degree turn toward where the thief is looking, showing the side of a building with a silhouette of a figure on it. Lightning flash, Spiderman costume for a SPLIT second.

Black screen.

Eh, at least I think it would be cool to see it happen that way.