2 Part Technique - If you cannot sprawl to stop a double leg takedown, at the very least, secure an arm-in guillotine as you pull Butterfly Guard so that you are good position to sweep. Rather than trying to finish the choke, use the fact that his arm won't be able to post well on the side opposite of his head, and hook sweep him over into the mount. If you feel the choke is set right, you can attempt the submission because you aren't risking position if you fail. If you opponent is wary of this sweep, thus leaning his base away from his trapt arm, sit up and kick him overhead with both butterfly hooks -again, landing in the mount.