Except that you're both wrong. Raising the temperature does not dry the air. Aside from the misconception about relative humidity, warm air holds more water than cold air, so the consequence of bringing the the cold bike into a warm moist environment is condensation on all cold metal surfaces.

That's why a simple fan works best in cold weather; a dehumidifier works well at temps above 40F (if it's a damp environment) and a space heater can be used as needed when planning to work in the area.