I agree - he'll need to carry around the Home Sec's letter saying he's
for quite a while.
No airline is going to take him on until he's got that as they don't want to run the commercial risk of having a plane-load of punters stuck in some hole at 03.00 because the F/O's been extraordinarily rendered. Hence they will only look at him once the Home Sec has been forced to sign the letter confirming he's off the hook.
Companies are there to make $$$/£££ for their shareholders, it's not their responsibility to 'demonstrate trust' if that can come back & bite 'em.