You already have had the spinner appear on the home screen in iOS 7.1.1 for no reason and it wouldn't go away even after some time except when you reset the phone?
Sadly yes :-(
It happened whilst browsing on Safari. I noticed that the wheel was spinning even after the webpage had fully loaded. I came out of the app and the wheel was still spinning on my home screen. After dinner it was still spinning, so I did a hard reset and it went away.