Ssandra - I think in this case what you're calling free will might come closest to what I'm referring to as the ability to respond or react. That's why I'm talking about it so much!
We have the ability to respond/react (in your words, free will) within the parameters that we have already set up. If your ego/personality contains conflict, and you want to act against your soul, or your body - yes, you can do that. People do that all the time - it's called a reaction (a partial, conflicted, body-soul expression not based on the present moment). Life is always a dance between our body and soul. But you can't escape an immutable event - the most you can do is postpone it. And why would you want to? You yourself set it up to help you respond (a complete, new, body-soul expression in the present moment)! One popular form of this type of body-soul conflict would be procrastination. As I've already stated, you have total freedom to respond/react anyway you want, in any lifetime, in any timeframe. So you tell me if you think there is free will or not?
Moments do change, but how can the measurement of time be an illusion but time itself be real?
I encourage you to have an experience outside of time. Even a deep meditative moment can give us that experience. An OBE can do it too, because you can not only visit places/people from this timeframe, but you can visit past timeframes too. I don't expect you to take my word for it - try it. I just described all those examples so that you could see that what we consider as reality, including time, is a useful illusion until we want to live beyond it. A mystic can look at something and experience the past/present/future all at the same time. It would be like looking at a rose, and simultaneously seeing it as a seed, and seeing it as decaying compost - and not having a judgment about any of it.
And with your last statement - I'm not sure what to say at this point. This is my experience, not an intellectual argument. I'm not theorizing about this, and I don't need to convince you about it. If you don't believe that the order of lifetimes can be non-linear I'm okay with that.