"The rings don't lock when anyone other than the Lantern assigned to it tries to use it." Hal would know, he's had his rings taken off him a few times to learn that the hard way. Even Ollie managed a tiny construct once.

"And last I checked, Mogo wasn't here to pick new recruits so she did pick it off the ground."

This is where willpower doesn't come in handy because it means he isn't going to budge.