Regrettably, it's neither possible to disable VLC's AR support nor edit its functionality. However, (as I didn't know about this play button feature) I'll implement the suspend to sleep behaviour in the next version. Nice idea.
What's up with this feature? I just recently discovered the Apple Remote's sleep functionality and love it. But as I prefer to watch my media in VLC it would be great to have this feature implemented.
If it is not possible to activate sleep directly from VLC, you could just enable the remote to quit VLC in order for all the normal remote functions to work. It's irritating having to raise from the bed to sleep my imac
Thanks for the great software anyway!