Yes your reason sounds acceptable. However there would be those that would suggest that the S2 should of just gone with the less girls option than allow you to crossover. The issue is that there are so many acceptable possibilities that they do not want to pass a rule because of the unacceptable ones. It seems that the ones that are the most unacceptable to the majority:
- crossing over and down more than one level ie level 5 to 3, or level 4 to 2
- crossing over and taking "positions away from the kids who have been working at them all year. ie a level 5 flyer crossing to level 2 and being made point flyer for a major competition
- crossing over to change divisions from, a stronger division to a weaker division or from all girl to coed - basically avoiding competition
- crossing over to "stack" teams - (4 or more crossovers IMO) This is usually when they are not on the team in the first place and are only crossover for a certain competition.
-crossing over athletes from higher level to lower level when a gym already has enough athletes to make good teams.
-crossing over because of the perceived quality of the competition ie we are going against WC, Stingrays, SOT, etc at our next competition and we need our best athletes on one team to try to win this division. (Rarely works btw)
Most other crossover reasons (illness, injury, people quitting, cross training an athlete to get their skills on equal levels, just a fun team) the majority understand.