I don’t think that hooking into the program is an option in this case. Even if it happens to work it general, you would be be left with only the content visible in the headset, but not the UI. You can however use the vorpX desktop viewer to display applications in the headset.
Hint: Depending on what you are doing you may want to disable hooking into newly started games while the desktop viewer is active. That can be done by right clicking the vorpX tray icon and choosing ‘Pause Watcher’.