I'm with Teefor Gage, absolutely full credit to the chap concerned, but I would have concerns around the CRM of father / son. That said, I can't see any operator handing over a 737 to a crew whose CRM they thought might be questionable.
Of more interest is G-WELY - Titan's A109... perhaps this ambitious young man will see the error of his ways (or get bored) and come and join the right side!!