SR run dry ~ if it fires up again, can I trust it?

[GSXRJJordan]

So I had some issues (turbo manifold stud snapped off) and had to pull the turbo/exhaust/manifold/etc, and when I put it all back on, I wanted to bleed the coolant system - no problem, done it tons of times, except this time I'm in my dad's garage with horrible drainage, and as soon as I start gettin the right color water out (had greenish coolant before, used orangeish tonight) I shut off the car and plugged the bleeder hole with the screw (hand tight), then went and put all my tools away.

Took the car around the block, all guages read normal, let it sit, no leaks (I still hadn't tightened the bleeder bolt though), and took a freeway onramp sideways followed by a 2nd 3rd 4th pull. Got right off the freeway, and the car started acting sluggish, so I pulled over and instantly smelled the pungent aroma of a cooked engine. Sure enough, bleeder screw was gone, radiator was dry, and I prompty threw up my dinner all over the sidewalk.

So my question to any who've had experience with seized motors is this: tomorrow I'm going to put some more coolant/water in and try to start it, if it starts and runs, can I assume no catastrophic damage took place? Obviously if it doesn't start it's time to make this a builder motor and get a new longblock.

The only experience I've had with seized motors is with an oil leak on a turbo bike, and the motor went from running fine to totally stuck (wouldn't start or even turn over) - my SR tonight was still running, just sluggish/unresponsive (like your MAF got unplugged, or you had a IC piping leak), so what does that say about the condition of the motor?

Thanks for any educated insight ~