It's interesting that Ron says it was Whitmarsh who originally contacted Boullier. Surely Whitmarsh knew the team had operational problems and that his head was likely on the block because of it. Best solution - not just for him but for the teams as well - would be to split his job. Bring Boullier in as TP to run the team while he stays home and runs the factory as CEO.
If I had to guess, I'd say that Ron just co-opted Whitmarsh's plan.