The 38-year-old gave himself a putt from the fringe for a three, but could only make a birdie and Challenge Tour graduate Law secured a one-shot victory over Ormsby and Brad Kennedy in just his 18th European Tour appearance.
David Law, the 27-year-old from Aberdeen, won his maiden European Tour title in remarkable style on Sunday.
Kaufman's round arguably hinged on one spectacular shot - a holed bunker blast on the treacherous par-three seventh that was claiming victims hand over fist in both men's and women's fields.
"It was fantastic, said Law. I really appreciate everybody coming out and supporting the tournament". It was special with the crowd, especially on the weekend.
"It's massive. It's not something I expected".
"The minute I hit it, I was like, "Oh, it's way too far", but I just jarred it".
"We had to go for it, so I sort of took a bit off a hybrid and lucky it went to eight-10 feet".
For France's Boutier the win will also be career and possibly life-changing.
It was co-sanctioned this year by the European Tour and US LPGA Tour for the first time.
"It's wonderful", said Boutier.
"It's been something I've been working toward since I turned pro and I just feel like it just happened", said Boutier, who now makes her home in Dallas, Texas.
"I'm so happy with how I handled myself today. It's not always easy to be able to get your first win", Boutier said after staving off nerves for her breakthrough victory.
"I've probably only felt comfortable in my own game in the last season or so. Then on 15 when I made that putt, kind of really made me like motivate myself and made me really more confident in my abilities to win the tournament". "It's an awesome event, we've loved it all week". Australia's Sarah Kemp shot the day's low round of 65, playing in the day's second group after starting the round tied for 35th.
And there was nobody more surprised than the American went her ball dropped into the hole.
A return to the LET in 2018 appears to have rekindled her desire and form and her final round was something very special.
If you'd told Kim Kaufman pre-round that she'd hit the two shots of the day, she'd doubtless have been delighted.
Only tomorrow, the immediate chasing pack will look markedly different after a day of pure carnage.
"It was one of those days you nearly can't remember what happened", said Kemp, who knocked in five consecutive birdies at Nos. 4-8. "I think I made four or five in a row and it just -- it just all came together".