Did I just brick my phone?!????

Ok so I have a Samsung Captivate, AT&T's Galaxy S. So basically my power button stopped working one day which poses a bit of a problem for waking up the phone. Long story short I rooted it so I could button remap but the remap apps would make it so I would need to press the remapped button (volume down) several times for the phone to wake. That's when I decided to install a completely different ROM (cyanogen) and see if that remap would work better. I downloaded rom manager and flashed the rom but now i'm at the recover y screen and its giving me the option to reboot system now. I can move through the options with my volume key but cannot select one cuz my power key doesn't work. If I take out the battery and put it back in it just reboots to the recovery screen again and I can't select anything because the power key doesn't work. Can I make it work somehow or at least restore the original operating system or am I SOL and did I just brick my phone? Please help someone! I am so frustrated!

Sorry for the block of text, but I would really appreciate help at all.