Ugh, I'm so sorry you lost some stuff, but I'm glad at least your laptop is back up and running. Hopefully you at least posted the MOC pages you had finished. Ouch. That makes me want to cry for you.
I hope so! I know when my mom's hard drive stopped working (PC), my brother was able to switch the casing, and retrieve the contents. Hopefully, it'll be just as easy with the MAC!