So, I just read through most of this thread and I would have to say that I don't think that Open Theism is as irrelevant to the question of the inerrancy of scripture as RD was saying early on in the discussion. I agree that Open Theism is not defined by anyone's stance on the question of biblical inerrancy, but the fact that the bible that we have today, while very close, is not absolutely identical to what was originally written, is far more compatible with open theism that with a deterministic worldview.
The discussion got on the correct track when glaring examples of inconsistencies in the bible (inconsistencies which do not effect the message of the scripture) were presented, and when Cygnus failed to respond and just deflected as though the point was somehow off the topic, he should have been pounced on and squashed with this point until he went whimpering into the corner complaining about being the victim he so desperately seems to want to be perceived as.
Such inconsistencies are entirely incompatible with Calvinism's version of God. If God is in meticulous control of every single event, no matter how trivial or inconsequential, one would expect an absolutely flawless scripture. The fact that the scripture we have today is not absolutely flawless is strong evidence that God is not in meticulous control of every event that happens. Otherwise, you'd have to concede that the errors that are present are there because God wanted them to be in there, in which case it would be the originals that were less than perfect, which makes no sense at all.
In short, while our stance on the inerrancy of scripture is not a derivative of open theism, per se, the belief that today's bible is absolutely flawless is a derivative of the settled worldview. This explains why his instinct was to asked the question in the first place and why the doctrine of open theism is not irrelevant. Indeed, one's theology proper is almost never irrelevant to any doctrine one might hold. Cygnus' brain was saying to him, "If these people don't believe God predestined everything, if they don't believe that God is "sovereign", how can they trust the scripture?" The answer being, "The same way you do, except with a lot more consistency and intellectual honesty."