No, I was lucky. Mine was more of an immediate failure. No misfires. From what I could tell the worm gear cracked at the keyway ( from vibrations ) spun on crank and engine stopped with 5 feet of flame shooting out of tailpipe. Spindle gear was damaged, but not nearly as bad as your's. Plus the bypass valve in oil filter block was removed and plugged, so all oil was filtered in one pass.
Edit: We did end up replacing crank though. Found no evidence of damage to bearings but I still pulled the entire engine apart and cleaned all oil passages. Pissed me off though, because it was a $1,200 knife edged Tilton crank. That was $1,200 in 1980 dollars...
With the amount of damage to that gear, I think I'd play it safe and pull EVERYTHING apart. Check and clean all oil galleries in block and head. Pull the oil pump apart. If you start finding any chips in oil galleries or bearings, throw out the oil cooler and oil cooler hoses. Oil coolers cannot be cleaned of all metal chips unless they are very carefully cleaned in an Ultrasonic blaster. Oil lines will get chips embedded in hose lining and cannot be completely removed by flushing with solvent or other means. You will always have some chips remaining, and they will come loose at the most inappropriate times.
Now aluminium gears eating themselves up is not too bad. It's relatively soft and may get ground to a fine particulate. But you still have to pull everything apart and check.
Valve train parts like Tappets and are the absolute worst for engine damage. Those are very hard chips, and usually shatter into many, many small pieces. You blow up valve train parts and you have to do major forensics to engine. Usually takes out everything... and I mean everything. Including dry sump pumps. Oil coolers and all the oil cooler lines are trash and even the Dry sump reservoir has to come out for cleaning.