"That's where we clarified that, 'Phil, you actually made a stroke at a moving ball, and so we have to apply that rule'.
"That's different than if he had deliberately just stopped the ball or whacked it in another direction or something like that.
"So it's just, it's us applying the rules."
Whether he ever wins a US Open - and that prospect is increasingly bleak at age 48 - Mickelson will be remembered for what happened on the 13th green.
Call it the Mickelson Meltdown.
"Sometimes it gets a little goofy, sure," he said, "but it's all within the rules."
Mickelson's shocking display in the third round stunned playing partner Andrew Johnston, who called it "a moment of madness".
"I've had multiple times where I've wanted to do that," Mickelson said, explaining he preferred the 2-stroke penalty to having to play the ball from off the green.
"I just finally did."
It was Mickelson's 48th birthday yesterday, and there were good vibes everywhere earlier in his round.
He was serenaded with Happy Birthday at nearly every green and even after four consecutive bogeys, the fans were still supportive.
"People here have been awesome, they made my birthday special," he said.
Then came No13, where nothing was special - just outrageous.
Mickelson jogged after the ball after it curled around the hole, realising it was about to head down the other side of the green.
His swat sent the ball off the hole.
He then two-putted for 10, with the penalty.
"I've wanted to do that many times. I should have done it several times at Augusta on 15," he said.
As he walked off the green, he could be seen smiling and talking to Johnston, who also was smiling.
"I said, 'That is one of the strangest things I have ever seen' and started laughing, and said 'sorry' about laughing," said Johnston, a jovial Englishman with the nickname Beef. "He just laughed at me, he had no words to say. We just laughed," Johnston said.
"It's something you might see at your club with your mates.
"It was strange, no one ever has those thoughts, it just happens."
Mickelson, a US Open runner-up six times, was having a miserable time before reaching 13.
He had those four consecutive bogeys before a par at the 12th. After three more pars following the meltdown, he bogeyed 17, then parred 18.
Asked if people would find his actions on No13 disrespectful, Mickelson said: "It's meant to take advantage of the rules as best as you can. In that situation, I was just going back and forth. I would gladly take the two shots over continuing that display."
As for walking off the green chuckling, he insisted: "How can you not laugh? It's funny."
Rule 14: Striking the Ball
5. Playing Moving Ball
A player must not make a stroke at his ball while it is moving.
Exceptions:
— Ball falling off tee (Rule 11-3)
— Striking the ball more than once (Rule 14-4)
— Ball moving in water (Rule 14-6)
When the ball begins to move only after the player has begun the stroke or the backward movement of his club for the stroke, he incurs no penalty under this Rule for playing a moving ball, but he is not exempt from any penalty under Rule 18-2 (Ball at rest moved by player).
Penalty for Breach of Rule 14-5:
Match play — Loss of hole; Stroke play — Two strokes.
- AP
