If he expected the outcome to the referendum to be such a massacre, he would never have bargained for it. First past the post implies, nay demands, a two party system. So what little point there ever was to the LibDems (and - by the way - UKIP) is gone.
Nick Clegg is either part of a disconnected metropolitan elite that has no idea what the natives of these islands want. Or he's an idiot. Either way he is an amusing footnote to history.