You're demanding McDonald and Houchen "put up or shut up" then complain that they look like rival hooligans?
Parliament has mechanisms that MP's follow, McDonald and others have pushed the Government, Houchen and Clarke into a corner, forcing an "investigation". There's nothing further to be gained in shouting about it unless something more comes out.
With this pending investigation by Gove, everything will be hidden behind it, it will take some big revelations to bring anything forward.
Until then, the best course of action is to let the investigating journalists to their job, something they've done brilliantly so far.