My Little Tony

This is a recreation of a puzzle someone posted in the blogs a while back. I made it to demonstrate how to solve it, but I found it the other day while going through my old files so I thought, "Why not?" This one's still pretty simple, but let's see how you all fare for yourselves.

The objective is to get the red block out of the boundary area by moving the other blocks around. The colors are just for your convenience, but only the red block is allowed to leave the boundary; green blocks must stay inside at all times.

Once again, you can explain it in text or edit the image in MS Paint(/whatever image program). This one's probably going to have to be explained in multiple steps, though, so copy+paste is your friend.
Remember to hide your answers in a spoiler.