User blog comment:12th Supernova/Chapter 743 discussion/@comment-4164499-20140402172429/@comment-98.254.236.140-20140405031647

Law couldn't interfere with his powers being negated by sea stone handcuffs(probably), plus what DD did to yet unknown Cora-san in his fight would probably back up the fact that he wouldn't since he kept that grudge for who knows how long?!!!!

My money is on the Pica substitution Jutsu