hello all!!!!

I have a Saito FA91 that started makin some racket the otherday. This is my first time taking an engine fully apart. Had to see what was goin on. Turned out the rear bearing was busted. I was told once to just get a screw driver w/ hammer and tap around the edges of the bearing to get it out. Well that worked fine for the front bearing! tapped out rather easily. When i tried it on the rear, the center ring and all the balls busted out leaving the outer ring stuck in the crank case! i can't get it out, can't get a good grab on a lip anywhere to tap it out and i dont have 60 bucks to get a bearing puller which i don't know if it would even work in this case. I heard somethin once about putting the case in the oven??? What the deal with that? Soooooooo ...anyone got any ideas to help me get this bearing..or half a bearing out????? (only the outer ring of the rear bearing is stuck in the crank case)

***any help would be greatly appreciated!!! Thanks in advance!!!!

-kevin