This exact thing happened to my friend with his CSVT. Where the linkage attaches to the trans (in the trans itself), the bolt fell out that holds it all together and his car got stuck in 1st gear because that was what gear he was in when it broke. You could just wable the shifter around wherever you wanted... no gates between even gears or odd gears. He ended up needing a new trans because the screw fell in and screwed more stuff up. Hope yours isn't that bad.
