It's like walking up on dude pooping in the street. If he's started you better just let him finish. Stopping it in the middle is gonna make it worse.
Madness string 111298
Sometimes freezing really is the right thing to do, sometimes fleeing is the right thing to do, sometimes putting yourself in harms way is the right thing to do, sometimes fighting is the right thing to do. In situations like that, unless you're somehow trained for them, it seems like your body just kind of randomly picks one.