memory leak? memory keeps climbing in this plunker when switching from social and contacts over and over

[btm1]

Can someone look at this plunker and tell me why:

1. memory keeps climbing when switching between share and contacts (this uses ng-switch and destroys controller)

2. why baterang shows that the contacts are still in scope when switching off of contacts

http://plnkr.co/edit/beAm3WRomMafKzx1SoSZ?p=preview

[jeremejazz]

I think the problem is in plunker. Plunker hogs a lot of memory after some time of use. I experience this a lot when I'm using plunker. If you're using chrome, you can check the memory usage of plunker in the task manager. I even reaches up to 100MB just by running your script over and over again