Methane converts to CO2 on its own. That's why it receives less attention than carbon dioxide, even though it absorbs more infrared energy. The CO2 lasts effectively forever, and is more important for the long term change in the climate.

It would be less-bad for the climate overall if we didn't get the extra temporary energy bump from methane, and it were "only" carbon dioxide directly. But no, there's no way to do that efficiently. The methane stores are spread over many thousands of square miles. It's just to diffuse to operate on directly.

It will break down on its own over a decade or so. Burning it off likely isn't feasible because its dissipating off the permafrost over huge areas.