[Seaside] (Newbie) How to remove unused instances

[Christian Mascher]

Hi,

when playing around with the examples I noticed, I had about sixty 
instances of WACounter in my image allthough (I think) none of them is 
actually used. I would have liked to see only one when I start a session 
  on localhost:9090/seaside/counter so that I can examine it in an 
inspector in squeak, but I couldn't find the actual instance among those 
60 or more. And the number gets higher with every experiment...

What is the correct way in the framework to get rid of "stale" instances?

Thanks,

Christian