oil starvation, engine life now?

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here's the story:

going around track, 1.8mi, sow
on the cooldown lap
going thru turn 1, felt strange powerloss like misfire, oil pres ok
going thru esses, noticed oil press at 100,000kPa = 15psi, so i shut down engine
coasted to hotpit
attempted to start up car again, engine was shuttering, turn it off, towed it home
left a quart of oil where it laid.

long story short, punched a hole in oil filter, thought i spun a bearing.

at home, drained oil, 1 qt came out, small film of metal filtrates on magnetic drain plug, plus about 4 brass looking dots, couldn't find much in the drained oil.
changed oil, replaced filter
started up engine, heard about 2-3 knocks, then they went away
engine idled perfectly fine, no knocking in any rpm band
drove car normally, no knocking
ran car hard for about 20 minutes, revving up to 7k, no knocking

i am going to drive the car a bit more, and then change the oil and take a look at it. see if there's anymore copper flakes.

here's my take on it:
bearings are damaged, but it'll last say 1-2 track events?

i have a new motor coming in to rebuild, i don't wanna swap it and rebuild the spun bearing one just for the sake of having to swap twice. i need the motor reliable for feb.

wanted to know if anyone's lucked out with oil starvation and saved the motor. it's a ka24de if that matters.