It doesn't make sense to say that chelating releases more mercury from amalgams. Everything releases more mercury from amalgams, why choose chelating as the culprit.

Chewing your dinner releases more mercury from amalgams but highly unlikely any of us will survive for long without eating. Touching your teeth together releases more mercury from amalgams. Amalgams are always releasing mercury, it is an unarguable scientific fact that even the ADA does not deny.

Chelating is not the enemy.