Im like your husband. I will keep trying something until I just hurt too much to keep going. Then I go have a drink or two and try again
I think getting him a board with magnetraction will help him lots. I'm amazed at how well it works, or perhaps it was just my old board was that
Getting off the lifts is 99% mental. If you tell yourself you are going to fall...you're going to fall. So stop that stressing stuff, it's not gonna help you. Visualize yourself gliding right off that thing. Tell yourself "I am gonna get off this chair and just riiiiiiiiiiiiiiiide on down"
I'm short, not even 5 foot tall and when I ride a quad with skiers I always wait for them to unload first. So lifts that have steep ramps like that I often have to drop off the chair, my board won't even touch the snow if my ass is still on the chair. Just pretend
that it's flat and hold on the to chair when you stand up to steady yourself. When you feel like you're balanced let go of the chair. Just like riding, weight forward.
Also, play with where you keep your unstrapped foot. I've found it's much easier to steer if I put my back food in the middle of the bindings. On my old cambered board it was better with the right foot pressed against back binding.