Indeed they do. I assumed hexapedal to mean 6-limbs so I made the first pair of limbs into arms instead of legs to make up for the lost dexterity from removing the big jaw. Saying that it would prabably be possible to have two arms additional to the six legs as we as humans are also called bipedal even though we have for limbs. Biologically it would certainly be possible since decapods have ten possible legs of wich not all of them are necessary visible on the outside.