Elliot:
Just 2 cents because I do not know the dynamic between you and the TO, but you could use this opportunity to open up a dialogue about judging while playing. You are allowed to be put in WER as a judge and enrolled as a player in the event for non-premier events, such as a Regular REL tournament. Whether you want to act in any official capacity or focus entirely on recreational play without judging responsibility is wholly up to you.
That said, it's good to keep in mind that judges are a benefit for the store and it would be great for the TO to share this viewpoint. We've had issues at a local store of a player complaining about the perceived conflict of interest when a judge is playing and judging in the same event. This initiated a dialogue about the integrity expected of certified judges and there should be a degree of faith from both sides- the integrity of the judges for the store and the acceptance of the store to trust the judge to improve the quality of events.
The IPG General Philosophy says:
Judges should be seen as a benefit to the players, helping to ensure the consistent and fair running of a tournament
It sounds like you had the best interests of the event and the player in mind when you got involved in an unofficial capacity. Hopefully the TO understands that you are a benefit to the community, even when just acting as a player.