Of course you CAN back out but do you want to? What is the difference if you use a mediator or an attorney? It's still a means to an end, isn't it?
lwb - what do YOU want? I think you are right.. there does come a time.. Is now the time for you to make a decision? Only you know the answer to that question.
I do know that it's all so darn hard.. It's hard to be in limbo but it's also hard to see the end almost here..