Tools -> Reset Persistent Script Properties

Suggestion:

Add a new menu item to the Tools menu that will reset all persistent properties on the selected prim that were set by scripts. Such things as particle effects, texture animations, floating text, and the like.

Shift-dragging the original prim away to leave a fresh copy that does not have the persistent properties, and deleting the original, works as a stop-gap method... But something more elegant would be nice.

I support this concept =)