Can you dig down a foot around it and flush cut it again and dirt fill the hole?? Or like I do with those nasty ones have the tree guy stump grind it. I agree it's in a nasty place and will always be a PITA.
Yes that's my plan to continue. I made cuts to quarter it and had half of it gone. Will hit with pressure washer or garden hose first after maybe a little more digging then cut with new chain, don't want to risk dinging up the new chain as I can't get them nearly as sharp as either the hardware store or of course new. It's really cut low so will throw some dirt over it and call it good.