Unable to finish "Forest Haven - 10: The Road of Bones"

[Laos]

iPod touch 2nd Generation. This picture does show 15 enemies left, that is because I rushed over to show this glitch. :P The skeleton becomes aggressive, follows you for an especially short distance, then returns to the spot where the glitch occurs (regardless if you're attacking it), leaving him invincible and non-aggressive and the level incomplete.