So far the LibDem MPs seem to have successfully spun the line of "it wasn't us, guv". No, never let it be thought. Apparently Ming made his decision all on his little lonesome without any stabbing in the back at all. It does seem somewhat of a coincidence that he tendered his resignation shortly after both Simon Hughes and Vince Cable had, albeit obliquely, called his leadership into question.
We then have to ask ourselves: why did he flee to Edinburgh without making a statement to the cameras himself. There's no doubt that would have been the statesmanlike thing to do and would have also left the party feeling united. Instead, I reckon he just couldn't bear to look his colleagues in the face, and was persuaded by Lady Elspeth that they weren't worth the candle. So he scarpered and left them to it.
So let's not let the LibDems get away with the "it wasn't us, guv" line. It is transparently untrue.