Well spotted twice.

The bruce foils are in a very horizonal angle and seem to have no raising/lowering controls. My guess is that one would trapeze out to insert the board and move it, like they do in boats like mine to put the boards in place (although we have lines to control the boards). Those foils have to be reinfoced (= heavy) to withstand important bending loads, so the task is far from easy.

All that said, I really hope they succeed. A self righting foiled tri would be the first multihull to have real potential to send monohulls to the museum, from dinghys to maxiyachts. So lets think positive:

I hope they figure out a better way, but if everything else fails, explosive pins could solve the problem of releasing the beam locks.

The most difficult remains the system to fold the amas under the capsized boat in order to lift the mainhull out of the water.

A solution I figured out would be to lead both (syntetic) shrouds to the mainhull, where an electric winch would tension them simultaneously. That would require a strong mast, with extra stays. And I am not sure if it would work. Any other ideas?