Hope you are keeping well.
That must have been quite a sight. Like you say, poor cowboy. Over here we have similar but smaller with Marsh Gas. It ignites and we call it Will- o'- the- Wisp. It is more like a glow above the swamps, with little lights moving around.It can be called jack-o-lantern too.
I thought this was pretty interesting. In Norway. Hessdalen Lights.
[www.youtube.com] Stupid music, apologies.
There are more things in heaven and Earth.....