Straight from the Horses mouth, meaning I didn't write this.
TaeKwon Masters can reset maps designated as Places of the Sun/Moon/Stars. The TaeKwon Master must be sitting beside another TaeKwon class (Soul Linker, TaeKwon Kid or another TaeKwon Master) and be regenerating HP (that is, your HP must not be full). It is speculated that being in Happy Mode is also required. Spamming the /doridori emote repeatedly is not necessary, but it is needed to enter Happy Mode. You can tell that you are in Happy Mode because you regenerate an additional +3 SP over the regular Happy Break effects. The chance to reset the maps occurs every 10 seconds (on each Peaceful Break HP tick). In order to ensure that you are continually regenerating HP, you can switch an HP-increasing item on and off, or use something which drains HP, like a rideword hat, combined with low HP regeneration. The chance of the reset occurring is very low, sometimes taking many hours or days to be successful.