As satisfying as this seems, I prefer a more realistic approach to this. He will likely get someone else to step down and win in a by election and carry on like before.
In four years the social pendulum has been held on the liberal side for so long, that next election the pent up energy for "something different" will more than likely push the pendulum to the right, with Pierre as leader.
It's the provinces that have more power with our cost of living, it's still going to get worse and when things get bad, people go right.