Surprise! I have two pictures in one day! XD
Hoody mask is obviously show sad face while Alex in Entry #68 said "Get rid that smile on your face". So I guess Hoody really really want to feel sad but he can't There's nothing in his mind anymore.
Anyway, Hoody with his mouth seen will be always my headcanon. I love it this way.
Copyright to Marble Hornets and ???????