Mr Snuggles
The only piloting judgement I would have questioned was continuing with the landing rather than instigating a go around.
a go around missed approach and taking up the hold to fix the problem would have been a better option than a ham fisted attempt at landing.
When able bodied pilots get it wrong which they do its instant throw away the landing and go around in this case he failed to do that and attempted to land confusing the FO too. Lessons to be learnt yes maybe a better briefing and plan over his unique situation of a false arm which should require a bit of thought in the interaction between the FO and himself