On Python Hunters, after the cold snap last time, they found many larger snakes dead. They are often found dead in spots that were not the "warmest spot" showing they don't know to seek warmth as much as we think they would, I believe.
That said, some will no doubt survive. It will only take a few breeding size snakes to repopulate over years. But with the numbers knocked even further down, there's more of a chance to wipe them out completely.
After all, we have managed to hunt other animals to extinction and to near-extinction, including alligators according to history. If we can drive a reptile as elusive as the alligator to near-extinction, I have hopes we can indeed eliminate the burms, if we can put out enough effort.
It's a hope. Maybe a small one, but a hope nontheless.