I totally agree Paul....and as I did not see the match, who knows what niggles and things were whispered! So there could well have been an underlying reason.
And as a pro....even as an amateur, you know the penalty for a breach in the rules.
Simple thing is....be prepared to putt out, whether in real golf matchplay or on WGT.
A pet peeve on WGT is......want to concede for x foot putts....my answer is up to you...I may concede a 5 foot putt....but I might make you sink a 2 foot one........silence!
Funny thing happened to me a number of years ago in match play (real golf) when I was probably 3 feet away - dead straight and uphill....my opponent conceded. However I made him putt a slightly shorter but was a downhill breaker...and he missed. Rest of the match was frosty to say the least and whilst I won was certainly no drinks at the 19th afterwards.
Luckily was against another club....never saw the sore assed loser again.