Short answer - NO
DVD-RAM is DVD-RAM - a different (and many say FAR better) format for rewrite, but not widely supported.
Uncasing it makes no difference, if another drive doesn't support DVD-RAM, that's it - not even sure if another drive could even read it?
There are some laptop drives that would use uncased DVD-RAM - the Panasonic so-called super-drive, but I don't call 2x on DVD-R, 2x on DVD-RAM, 1x on DVD-RW particularly super... a friend just got a laptop with one, and I was horrified at that specification.