For the record, here are the relevant rules (these are AWSA rules since the language is a bit more clear but the specifics are the same in the IWWF rules.
8.06 A Fall
A fall in any event is when any one of the following occurs:
A. The skier loses possession of the tow line (except as noted in Rules 9.11, 10.11 and 11.11); or
B. The skier does not have at least one ski on one foot; or
C. The weight of the skier is not primarily supported by his ski or skis, and in addition the skier is unable ultimately to regain skiing position.
If the skier does not lose possession of the tow line, has at least one ski on at all times, and ultimately regains skiing position, there has been no fall.
8.07 Skiing Position
Skiing position is defined as that position in which all of the following exist:
A. The skier has possession of the tow line; and
B. The skier is riding forward or backward on the water with a ski or skis on his feet; and
C. The weight of the skier is supported by his ski or skis or the skier is ultimately able to regain control.
Think of it this way, if somehow (longer line?) he was able to get to #4 or beyond, his score would continue to add buoys. Just because he was momentarily “not supported” by his ski is irrelevant. Trick skiers do dips all the time which is
The same. Years ago, Patrice Martin bounced on the water with his foot in the toe strap for 4-5 seconds before he was able to stand back up and do more tricks. Jumpers obviously are t supported by their skis in the and many times a weird landing will pull off a ski and/or cause them to bounce along the water only to ultimately get the ski back under them and stand up. The jump counts.
It sure was incredible to watch).