If you want it in the film you have to make it come across in the script. The scrip must be clear on how you want it.
I think he shouldn’t hesitate, I think it works better if in that moment he acts solely for his mother’s wellbeing. That makes more sense to me with his panic keeping him from calling the police propperly. I think it would make most sense with what I know of the character (and it would make him, as you put it, look like a dick.)
Sure you can post it there, the polite thing to do then would be to give some feedback on people’s scripts there.