The Wrecking Ball is a meleeweapon exclusive to the Queen and the Sea DLC. It ignores shields, has various attacks in its 4-hit combo and deals critical damage on the last hit.
The description does not mention the critical hit on the recall.
After performing the throw, though moving is possible as soon as the control lock expires, the recall cannot be initiated for an additional 0.35 seconds.
If the recall attack is cancelled before the Wrecking Ball projectile reaches the player, it will drop from its current position, continuing to deal damage until it touches a solid surface.
It's possible for the recall attack to damage a single enemy twice if that enemy is close to the player, greatly increasing the damage output of the weapon. With proper positioning, Wrecking Ball can reach a staggeringly high base 420 DPS.