Yeah, he really is having trouble with it. I guess your H has his head in the sand. My H has a friend whose S is doing drugs, and whose cousin wants to put an intervention together, but his father is saying that he will be alright, no need to worry so much. I don't understand people who try to ignore problems until they get really huge.
Would your h meet with the school counselor, too?
You have a perfect right to get angry about this matter. It's you child who is in trouble, and his father is too preoccupied with his own interests to help deal with it.
Maybe your H is feeling guilty? Who knows how their minds work?
The camping sounds great! Don't forget marshmallows!!