A student sent me this from his revision: "Thought you might get a kick out my original. Don't worry. I fixed it."
Jeremy, bending forward in the doorway, stood straight up and glared at her.
Participles mean simultaneous action. You can't bend and stand straight at the same time.
How to fix? Well, I would probably imply sequence:
Jeremy, who had been bending forward in the doorway, straightened and glared at her.
Not a very good sentence, perhaps, but at least logical!
Alicia who loves students like this!