So it looks like my personal browser on my MacBook Pro running Yosemite is the only one I have come across that is displaying the top menu tabs and the bottom footer widgets centered, even with Jetpack enabled and then disabled. Looks like a friend’s computer running Windows 7, as well as his phone, are showing the website with these buttons left aligned. Again, this is the case whether Jetpack is active or inactive.
Anyone have any other ideas what might be causing this in the theme?