I have your plugin installed on a couple sites. One thing I've noticed is that if you turn off the timer animation the slides no longer switch, it's stuck on the first. Same thing happens if you disable the timer through CSS strangely.
So I updated my plugins version of Orbit js to the 1.4 version that comes with Foundation 3.0. Then I still had the same problem when disabling through the backend, but I could disable it with CSS now and the images would still rotate.