There is nothing more painful then watching some one hurt your kids. NOTHING.
But you need to use your H terrible behavior as an opportunity to teach and show your kids some life lessons.
You S14 is old enough to learn that things will not always go our and we have to be grateful for what we have and not what we don't have.
Your son does not have to do anything that he is uncomfortable with like enter your STBX house but you should guide your son through his grieving and let him know that everyone will be okay even though its not ideal.
No need to analyze why your H is trying to force your S into his apartment, your H is acting irrationally right now, no logical explanation
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13