Board Thread:Theories and Speculation/@comment-5407586-20150624095943/@comment-3279282-20150703141106

You can see it on this page clearly. C4 moving while Deidara doesn't form the seal, then he forms the seal and the clone explodes. So the seal has nothing to do with the movement.

Actually, Omoi knew that Deidara was about to suicide bomb because he announced it. So Omoi knew were do put the sword. So it's hard to say if Omoi wanted to stop the bombing or to paralyse Deidara.