Cast iron sewer pipe fittings

interesting....I got some 2 part resin I use for buried cable splices....? Perhaps a clay plug and dam, then backfill around it with resin. Ill have to get back under there and take a few pics for sure now. I bought a new 10 tpi "thick metal" Diablo sawzall blade today just in case I have to cut the old one out. My one issue is that there are 3 daisy chained together and I may not have enough flange to seal to if I cut one out. Well see....