I just picked up the transmission from Rik at Ortonville Transmission. Well the transmission damage was worse than I thought. Broken bolts in the overdrive housing, intermediate clutch pack was cooked, overdrive clutch damage. TCC solenoid screen was full of converter clutch material. The filter was clogged up with a combination of transmission clutch and converter clutch material.
If there was any doubt before, the torque converter definitely needs to be rebuilt.