Isn't entanglement, more like you take the coins to opposite ends of the universe, and then by flipping one and observing the result, you know what the result will be when the other one is flipped? The whole point of entanglement is that the state of the entangled particles isn't determined yet, until observed, which is not the case with the coin example.

http://en.wikipedia.org/wiki/Bell%27s_theorem