I doubt if this pilot will get his licence back.
Exactly this same situation happened in my old airline some decades ago. He was sacked, (and I don't think there was a single pilot in the company who'd flown with the man who disagreed with the company/local regulator's decision, which speaks volumes), but when he returned to his own country, (a smallish country in Western Europe), he seems to have been able to convince the locals that the wife had stitched him up. He's still flying as a captain in his home country as far as I know, and I'm pretty sure he frequents these pages.