^Yes, but we were never shown that it could teleport, only pass through walls. And if it could teleport up under its own power, there would've been no need for it to move to the beam-up site. That scene has always suggested to me that the evil pinwheely thingy tagged along in the transporter beam just before it was shut off. After all, we don't know how long the carrier beam might linger after the bodies disappear into it. Maybe it remains active until rematerialization is complete aboard the ship.