We all do silly things sometimes, however, I would not consider riding in the wind as silly. I ride in whatever kind of weather Minnesota has to offer that day. Some days it's 40 mph winds, sometimes its raining. I really don't know why I continue to ride in the rain actually (guess I just love my horse :) ). The joys of showing horses I guess.... You took the necessary precautions with the extra lunging. You did nothing wrong. Just a freak thing I guess.
Glad you're both okay.
Glad you're both okay and not hurt.