Busaman, STAY OFF THE BIKE! It's a time bomb now. Listen to the posts. I'm not going to repeat the auto example.
As far as I'm concerned, you can start the bike up, let it idle till it knocks. Pickup truck it back to the franchise, bring the dealer principal out, (owner) let him now listen to a bike serviced at his shop.
Who is going to rebuild that engine at that dealership? Did you see how long it took for a battery and service? All that bearing contamination crushed in between the gears, plus, what you can't see is now hidden in the case. Scored head cam tower bearings equals New Head, old valves? See the mess of old and new parts swapping. Your performance will drop, and it wasn't your fault. Pistons are scored the worst. New pistons and bore? Nope, that is a service taken away from you... the bore job that is. For example, say a bike can only be bored once. Because of that oil plug flub, the dealer is taking away the only bore you have left in a low mile bike. Therefore, you want new cylinder, and new pistons, etc.
The oil filter is the 'x-ray' of the internals. Cut the filter open, pull the pleats apart and check for bearing debris.
Bring a video, film the action, get a lawyer, or let this dealer read this thread in his office and think about wetting you a new Busa off the floor, or ride the bike, take their word (the dealer reading this) that the bike is OK. Then, be well protected, buy a life insurance policy, (me as the benny) as well as full leathers, and wait for the pain, death, amputation, wheelchair bound, all for a loose drain plug, and the dealer letting his insurance company deal with it, (make sure he's insured first).