pretty scaring news but didn't read that myself . i think you misunderstood oil cracks with oil plumes ?? BP is drilling two others wells to reach the original well and pomp the flow . junction is expected to happen in august . will it work , don't know but at a first glance there is no reason that it doesn't .
use of nuclear weapon to contain oil spills works according to Wikipedia , russian tested the method successfully several times but there's always a risk that it creates cracks in the seafloor which then , would turn the disaster into something unstoppable , unstoppable until the oil reservoir pressure reaches the ocean bottom one
wiki
graphic
detailled documentary about how all happened