CCL, you really have a heart of gold!!

You're probably right and even a cage and one hour playing time with humans is better than the shelter + he loves your hubby!

I beginning to think if he was a single cat in your household, he would be one happy cat. The other cats must confuse him or scare him, maybe he thinks cats are more unpredictable than humans, and that's why he's reacting aggressive. Or he's just territorial!

It would be wonderful if the shelter could find a place for him where he would be an only cat, or where he could have some seperated space for himself. I wish you all the luck in the world!!

BTW, I was just thinking...
Maybe you could spray your bed with Feliway. This immitates feline facial pheromones and cats usually don't pee where it smells like that.

Kirsten