I got another solution.

I had the same problem, and after going crazy looking for a solution that
didn't involve becoming a metal welder.

I found a longer version of the same plug.  As it turned out, the top portion
of the hole still had plenty of thread to tightly hold the new plug.  I did
that about 4 oil changes ago (12,000 miles).

Total Cost:  US$2.49

Nate El Great
85GL 180k mi