Hm...interesting stuff:
"An oft-cited feature of pantheism is that each individual human, being part of the Universe or nature, is part of God. One issue discussed by pantheists is how free will may exist in this framework. In answer, the following analogy is sometimes given (particularly by classical pantheists): "you are to God as an individual blood cell in your vein is to you." The analogy further maintains that while a cell may be aware of its own environs, and even has some choices (free will) between right and wrong (killing a bacterium, becoming malignant, or perhaps just doing nothing, among countless others), it likely has little conception of the greater being of which it is a part. Another way to understand this relationship is through the Hindu phrase, tat tvam asi - "that thou art", wherein the human soul/self or Atman is understood to be the same as God or Brahman - only people do not realize it. In this Hindu context, they believe that one must be liberated through enlightenment (moksha) in order to experience and fully understand this relationship - the part becomes no longer dissimilar from the whole.
Not all pantheists accept the idea of free will, with determinism being particularly widespread among naturalistic pantheists. Although individual interpretations of pantheism may suggest certain implications for the nature and existence of free will and/or determinism, pantheism itself does not include any requirement of belief either way. However, the issue is widely discussed, as it is in many other religions and philosophies."