Your link is fine except I read nothing that supported your claim that he believed in god, except for this mention of 'Spenoza's god' which to me is more another name for nature which I see as something different .And for every post like yours, there's one of mine: http://www.godandscience.org/apologetics/einstein.html
Einstein believed due to the complexity of the universe there had to be some kind of Creator. What he couldnt accept was the human suffering at the hands of this same creator, so I guess he was kinda like me "sitting on the fence and not really sure"
http://www.waterwind.com/spinoza.html
"Spinoza asserted that for a concept of god to make any sense at all, it must simply be nature. That is, god cannot be something outside nature that controls it, but must necessarily be part of it. According to Spinoza, God IS nature. While Spinoza was excommunicated from his Jewish community in Amsterdam and condemned by Christians as well for being an atheist, he was very devoutly religious. He saw the traditional anthropomorphic (man-like) god as an abomination, completely rejecting the wonder of nature, from which life comes. To Spinoza, nature is the true expression of God. And each of us is part of it. Unfortunately, his highly technical, mathematical style of writing limited widespread appreciation of his work."
from your link;
"I'm not an atheist and I don't think I can call myself a pantheist. We are in the position of a little child entering a huge library filled with books in many languages. The child knows someone must have written those books. It does not know how. It does not understand the languages in which they are written. The child dimly suspects a mysterious order in the arrangements of the books, but doesn't know what it is. That, it seems to me, is the attitude of even the most intelligent human being toward God."6
Also keep on mind that the source itself is aimed at supporting the idea of a deity and it's balance can be easily questioned.