Unlike other spells that target objects that specifically call out "unattended object" like disintegrate, dispel magic, grease, levitate, light, mage hand, magic weapon, and telekinetic projectile,
Telekinetic Haul doesn't have this stipulation. I assume this means that it can be used to "move the enemy's sword 20' up in the air". The person now has a choice to hold onto the sword and be levitated or let go.
Also the way this spell is worded it seems like a 500lb boat filled with 4 people can be telekinetic hauled. Only the targeted object's weight is considered.
Are these interpretations intended? I hope so because I'd like magic to be a little cooler.