You're mistaking a "personal God" as the only God. When I say Einstein believed in a God, I'm not saying in a personal God that interacts daily with it's creations, but Spinoza's God, which he said, "I believe in Spinoza's God who reveals himself in the orderly harmony of what exists, not in a God who concerns himself with fates and actions of human beings."

So pending on how you define "God" Einstein's belief can be argued either way.

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Set your destination with your heart, get there with your mind.

"The wisest men follow their own direction." - Euripides