Hi
You could probably still save the screen, but sometimes the only way to clean it out is to use a heavy duty screen cleaner. Did you use waterbased or plastisol paint? Plastisol shouldn't get stuck in the screen unless you got it close to the heat and it started curing (in which case the screen is probably not usable anymore). If you cannot get the paint out, I have found that the emulsion stripper actually gets most inks out, but it would ruin any existing image you have on the screen. Still probably better than throwing away an expensive screen.
Good luck