Puddin' Man wrote:

SNIP
There's about 4" of horozontal pipe, then a flange that's
flush with the tile. I very gently snaked it out, was
gonna dry it out, smear a ton of petrol jelly in there,
and Pray! grin

It sprung a leak by the flange. I shine a lite inside the
pipe, it *looks* like only one (rotten) piece, all the way
to the toilet drain line (maybe 3 ', all inside the wall).

Woe is po' me. :-(

What's on the other side of that wall? If it's just plaster/drywall,
open that wall to make repair.

Jim