Hi Josh,
Nope. If I had a leaf, I would already know. I will go take a picture of the bark though.
As far as I know, Cascara doesn't grow like vine maple. This plant was an orgy of stumps coming out of one clump. If it were in a vine maple forest & none of the trees had leaves, you would think that it was vine maple also from a distance, which is why I think that it's pacific dogwood. But, I don't know what the dogwood looks like on the inside.
Bark pictures coming shortly.