One Direction's biggest fear -- not deportation ... but an ass-kicking from The Wanted! So, why were the 1D boys so terrified? We have all the details on the very serious -- and very hysterical -- boy band show down. Plus, how much do American Idol judges know about the voting results before you do? We know J.Lo, Steven and Randy got a heads up hours before Jessica Sanchez got "the save" last night -- so ... is that fair to the other contestants? We're gonna ask 'Idol' honchos.