A Foglight User wanted a WCF component removed and a foglight admin level user (not foglight) went to remove the unwanted view. When he pressed remove, the spinner just spun.
This issue is identified as WCF-10256 and is addressed in a upcoming version of Foglight. The problem is that the system is taking too long trying to find other definitions that the view refers to that could also be removed after the current view is removed since they would no longer be used (time out).
Try to remove some of the components of the WCF object to make the analysis time shorter (ie so you won't time out)