sageDieu, scarmon25, sixstringsg- THANK YOU for the quick responses!
In glitch recovery, I seem to have no access to, well...anything. "E:can't mount /sdcard" over, and over, and over again.
I've got it showing up with ADB now, but not sure where to go from here. I know I have a good backup on the sdcard.
I'm assuming I could push a different recovery through ADB in this state, but I'm not sure whether or not that would help (or which recovery to push). This isn't my phone, otherwise I'd be more "caught-up" with things.
Any and all help appreciated.