It's a tough situation all-around. As the others suggested, I would have a private talk with your ex about it. A 14yr old boy is just on the cusp of becoming a man himself and has thousands of things bombarding him at that age. It's hard to tell from your post, but it sounds like your ex is full with two infants/toddlers and it may not only be a handful juggling them and a "new" wife, but also a 14yr old "on occasion". I'm not saying this to defend your ex, but just pointing out that a nice, civil talk to resolve the issue is a must for EVERYONE involved.
[quote]My opinion is if he forgoes extended visits and shortens summer visits, then it is a bad father figure. [/quote]
I think a lot of us would disagree...maybe he's actually taking his sons feelings to heart over his own by returning early to make the son happy? Hard to say as we don't know the full story. My 1st ex gave us permission to move 1300 miles away, not because he's a bad father and didn't want to be near his son but because he knew it was best for the child overall and that he wouldn't win the battle. My 2nd ex is a BAD FATHER...physically and mentally abuses the kids, is selfish and puts only his own needs first.