"Work Offline" button should stop/start tor (as well)
On the Tor Browser Bundle 3.0alpha3 release
If you go to the menu -> Web Developer and press "Work Offline" it says:
"Tor unexpectedly exited."
Tor won't start when you disable this option again, you need to close and start the browser.
In my opinion, in addition to a NEWNYM function (legacy/trac#9442 (moved)), there must also be the functions to stop or start Tor in this 3.0 version. The "Work Offline" button could use such functions too.
In short, there must be more control over the Tor network settings in the browser.
There is currently no way to temporarily disable Tor without closing the browser, even though I frequently need to do this.