Yeah I was considering close to the same method. I pulled my motor and was ready to flush it in the parts washer and use the air nozzle to ensure everything was good to go.
I am so glad I didn't .
I decided to do it the right way. I completely tore it down and the outside crank bearing had fragments melted into the race of the bearing.
There was no way in hell any flush or air was removing that shit.
Have to replace the bearing and reassemble. I would have ruined my crank , new pistons, and possibly trashed the entire engine.
Do yourself a favor and tear it down for inspection.