I was playing my game and I came across a particularly nasty jump bug, I was wondering if anybody knew how to fix it without deleting the sim.  I used boolProp testingcheatsenabled true to capture the bug in the picture attatched.  

The bug occurs every time my college sim, Rex, tries to use the toilet or interact with another sim.  (Objects such as chairs, tables, refrigerators, etc. were not affected, just for your information).  
Anyone have a suggestion?

Also...I've been trying to figure out a way to separate my playable sims from the NPCs/townies/downtownies/dormies etc. in order to delete them and help my game run faster.  If anyone has tips on that, too, it would be appreciated.

*attached image removed*