I'm not sure if this is a bug of this new version of LWJGL, or the latest version of Minecraft, but I suspect it is LWJGL, and I'm going to test that by reverting to the default version soon. Anyway, I'm unable to right click by holding the control button and left clicking like you would expect to be able to, and it's bothering me because I don't like having to use the two finger method of right clicking all the time.
EDIT: I checked by forcing an update and then getting the latest snapshot and I could indeed use the control button to right click. That means that it's an error in this version of LWJGL. Glad to help with bugs, I hope you continue to make good progress and we see Java 7 support on Mac soon with this improved version of LWJGL.