Richard J Kinch wrote:
Relz writes:

Does anyone else have any other tricks up their sleeves?

You have to assume that bolt isn't coming out, so forget more
welding, etc.

Create a decent center dimple on the stump by cutting crossed slots
with a Dremel type cutoff tool. Use a hand drill to drill out enough
to get a thread repair tap and coil in there.

The real problem here is the busted off easyout (should be called a
nowayout).
I would suggest a carbide drill - the 'tipped' variety - usually sold to
drill concrete or rock.
With care and a little luck it will eat the easyout for breakfast.
A solid carbide drill costs mucho and will break if you look at it the wrong
way.
Those damned easyouts should be outlawed!
Around here we use aircraft-grade gasket goo.
Liberally slathered on the bolt it will prevent seizing even when the
assembly in routinely submrged in salt water!

Regards.
Ken.