I have been following your threads since yesterday. I am also trying to launch an iPad app into the app store and my final step is getting the orientation to change on the ipad with Sencha and PhoneGap.
So far, this is the only thing that has worked for me:
I added that line to the index.html file and I created a function in my sencha file for the callback.
document.addEventListener("orientationChanged", yourCallbackFunction, false);
So, basically now I am trying to get Sencha to "refresh" or stretch out on the screen like when it first starts. I have tried doLayout(), but that did not work.
//alert("PhoneGap has triggered the event!");
// Now I need to have Sencha refresh the Panel?
If you have some luck with this let me know.