Originally posted by jenluckenbach

Looks like he's singing the "JailHouse Rock"...

I can quite imagine how you feel, but please don't be too upset, it's for your cats' best!!!
Every cat has it's very own personality and Jim and Sterling maybe have been feeling a little bit unconfortable or, let's say "uncertain" about their role in your household with the fosters...this confinement will bring back a feeling of "being secure"...it's then easier for them to find their new role in your home...
I very much admire you for having such a big cat herd at your home and I am sure everyone has to find it's place and as you know a "cat pack" is never static and they never have a real pecking order, so changes like this often occur in multicat households...but you've done very right in acting at once and seperating them!!!
Perhaps I once again may highly recommend the wonderful book "Is your cat crazy" by John Wright...it has helped me a lot to understand Nellie's reactions toward other cats!!!

HUGS!!!