This is not my area of expertise, but you can choose to hide the entire status area for you IWP users. If there are control in the status area you want, you can replace them with buttons and other layout objects that do the same thing/display the same information.
FYI in the desktop version, changes to the status bar only affect your copy of the application. They are not stored with the file. So even there, you don't have that much control over the status area.
Expanding on what Phil said, you'll want to not only hide the status bar, but also lock it. Then you MUST supply your users with your own buttons for ALL functionality, including Commit, Find, navigation, and Log Out.