I would think shooting it a few times would allow the methane to leak out.
Good idea Shooting a few holes holes would “vent it” slowly ... But would Laz hit it?
Adding to the “Don’t try it this way list” ...
Cutting it open with ye olde sperm whaler flencing knife fails:
https://www.youtube.com/watch?v=7X0hq0ug9q4
And don’t try to use a crane.
https://www.youtube.com/watch?v=m5QnrdNq6Wc
Tow the carcass out from the beach at high tide, apply two or three tracer rounds from a suitable distance and observe the pretty fireworks...