Coincidentally, I heard this week that the routine began that way in order to comply with a different rule. Routines were (are?) limited to a certain length (I forget what; call it x seconds) and the shortest usable extract of the music (Ravel’s Bolero, of course) was x+y seconds. So the routine began with y seconds kneeling, with their skates in the air.
Since violation of the rules is a point deduction and not disqualification, I suppose if you had enough “talent” (we ARE talking subjective judging here), you could bank enough points to be able to get away with it. Like fuck you money.