On Brinstar, if they are anywhere but the bottom part, you can simply hop back onto the stage freely. At the bottom if they are to the left, you can Tornado through them to the other side. Vice verse if they are on the right. You can also Shuttle Loop where it passes through and lands/cancels on the first platforms, and most characters can't punish that even if they know it's coming. You can also abuse things like jumping off, and gliding under the stage coming up through it/feinting it.
What makes it bypass the LGL is that MK isn't forced to grab the edge at any part of this. If he wants to shark normally, he can fall off without grabbing the edge, and then go to work. He's also not fun to follow as he does it, since going airborne usually lets him get back safely, and following him along the ground is just asking for trouble lol.