Oh Julie!!! {{{{{HUGS}}}}}
I just thought of you, Ally and Connor today and supposed that no news meant good news, so I feel so very sorry to read these news...
If Ally is seriously hurt, you'll have to find another solution.
Please talk to your mom, it would be great if you would know him in a good home, rather than return him to the shelter (I know it would hurt you so much!)...and I am sure we'll all jump in to make the shipping possible...

Maybe a separation in the cattery will also work, but please let your heart decide...