the sons were definitely in on the whole thing - why have they suddenly jacked their jobs in etc? and if the wife ( as if) was amazed to 'discover' that her husband was alive after all, would she have continued to pretend to her sons that he was still dead? it's a load of ill-conceived cobblers!
I find the whole thing enormously amusing in that they have bungled it so badly and made themselves an international laughing stock!!! if you are going to try something like this do it properly, no?
most amusing of all is the fact that we aren't even talking big sums of money here- less than half a mill if I am correct. Tossers!!