Cobble Hill - DoodleTown: Catching Santa Puzzle (1000)

What is going on in DoodleTown: Catching Santa?! It looks like poor Santa came down the chimney to deliver presents to the kids, but without even drinking his milk and cookies, it looks like he's dropped his bag and is trying to escape back up the chimney before the kids see him. Even the reindeer needs to take a peek into the window to see what all the ruckus is about!