yeah, it sounds like separation anxiety to me also. Tayda would leave unbelievable messes when i first got her. she actually once completely chewed up the pan in the bottom of the crate and there was a coat of diarreah covering a 2 foot radius of the crate (which included the WALL)
after much research on separation anxiety, this is what i did:
i started feeding her in the crate and putting here in there for some time when i was home also.. whenever she goes in her crate, she would get a treat. i would close the door, even if just for a second, and then let her out. when she got used to being in there when i was in front of her. i'd give her a treat, close the door, and walk away for a minute. come back, open door. i'd repeat this over and over and over and over…. it got better eventually. just have to teach them that the crate is a good place. i used to videotape her while i was gone. it really did get better and better. i used to leave a camera on the whole living room area (where the crate is) just to see what she did while i was away. it got to the point where she was totally trustworthy out of the crate when i wasn't home. and actually, even when i'd just leave her loose in the house, i'd come home and check the video... and she would spend most of her time - in the crate! she'd walk around, pick up toys, take them to the crate, sit down, play, chew, walk back to her toy box, pick up another toy, go back to the crate... etc etc.
just be patient and keep at it! it WILL get better!
But Poor Tayda... ever since I got Lenny, they're both crated together. He is totally untrustworthy in the house!!