Instructions
Pres the right analog stick in any direction. This will cause Kratos to perform a leaping roll that travels a lot of distance in little time. Since the leap keeps him from touching the ground, it can get you a different tactic to getting free of the scenery besides just walking.
Turn off the system and the leave the power off for five seconds. This will allow all power to the machine to be drained and its short-term memory wiped.
Turn the system back on and load your game. The game will begin from your most recently saved location, which may cause you to lose your most recent progress, but you will be free of the scenery you were previously stuck in.