It's probably more likely that someone got cut from a part or were given an optional part some time during the season, or someone just decided they wanted to play a part and they did because they figured they could get away with it.
great playing man, but no offense....why is your horn so beat up when that's a 5A school/band? I mean maybe it's a vintage selmer or something like a ybs52 that's just been through the years, but like can the school not get you like at least a 52 that isn't so beat up or a cannonball?