Here are some links to solutions.
This is for grabbing a backtack:
https://www.youtube.com/watch?v=EKga...index=41&t=14s
You can see Nathan Orchard at 2:06 hit a variation of this move live:
https://www.youtube.com/watch?v=Yz1Ub_u4P4E
Here is a video with using a Butterfly Hook:
https://www.youtube.com/watch?v=w6b3pKiYPVw
On 5/13/2013 this is Eddie Bavo's Response to someone else:
1. Don't go dhere *in my best Royce voice*
2. Hit the heisman as he turns into position.
3. Threaten with an arm triangle as soon as he turns. This won't work if you let him settle in. If you threaten correctly he will turn back towards you, don't let him turn back
This is why I think the twister pass is such a great choice while in top half, it's so hard to stop when mastered
Here is Saulo Riberio doing it a counter in the Gi incase you train in the Gi as well:
https://www.youtube.com/watch?v=hTZv7IEwMeo
Hope that helps