Originally Posted by hairnet

the NDS arm should have a self extracting bolt, but then how did he remove the bolt alone?

Originally Posted by Leukybear

He must've screwed out the outer dust cap as well or is missing it. It doubles as the part that the inner bolt backs into for that self-extracting action.

A simple fix really, screw the dustcap back on and skip to unscrewing the inner bolt instead.

Some people choose to remove the dustcap to prevent theft as all you need to remove a gxp crankset is a single hex key.