Looks like Anand has stumped him. Gelfand has lots of aggressive options, except that he doesn't know which ones black has already refuted in preparation. He'll have to work it out on the board, which means a very difficult job ahead. Gelfand already looks to be agonized. However, Anand mustn't relax too much -- Kramnik-Leko Marshall game comes to mind easily.
The fellow who thinks he knows it all is especially annoying to those of us who do.