Every once in a while, I find my phone battery draining unusually quickly, and the 3rd-party "OS Monitor" tool shows some app running in the background, using lots of CPU when it's not supposed to. Sometimes, it's a music app actually playing audible music in the background, despite no evidence that the app is running - no notifications, and nothing in the recent apps list. Invariably, if I open the app info screen and click "Force Stop," it does nothing at all.
Certainly an enthusiast-friendly, developer-friendly system like CM has some way to kill a frozen app... right? Without rooting my phone, is there anything I can do other than rebooting when this happens?