At this point, I would say it's highly unlikely that Ivan's path will have any drastic changes to it, and I don't see anything that would turn him towards the Big Bend.
Keep in mind: your weather is going to be nasty the next couple of days as Ivan makes his way towards Mobile/Pensacola. You're in the worst part of the storm (except for those in the direct path) as the NE side is the most viscious. It doesn't have to make a huge turn to affect your weather. This forecast will keep being tweaked and finetuned until it makes landfall; the closer it gets, the more accurate it'll be.
As for the NNW movement, if this continues, I would really like to know what kind of impact that will have on the path. I know it won't shift it dramatically either way, but wouldn't it change it somewhat as it goes more N than West? I'm so confused at this point that I should just stick to reading books.