This case feels like a ridiculous, long winded fishing expedition.
It looks like HP know fine well they have nothing, hence the 'strategy' adopted by Rabinowitz is to take the scenic route in trying to concoct a character assassination on Mike Lynch and see about tripping him up, not proving any actual wrongdoing. This is the clear impression I am getting based on the reporting here.
The judge is fed up and that is not where you want to be when trying to win a case.
Biting the hand that feeds IT
