I feel your pain man. The YLOD is a complete balls. And what Sony never seem to tell anyone is that it can't be completely fixed. It can be repaired and it'll work for a while but I've yet to hear of a fixed YLOD that lasted any decent length of time after it came back.
My advice to anyone with a YLOD is get it fixed, back up your data, and trade it in for a new console.
It's harsh having to lose the B/C and two extra USB ports but they're a necessary sacrifice.