OS X has to two different built-in ways to handle right mouse button 
clicks in the context of a context menu:

1) short right click => the context menu stays open until you press 
the left mouse button to select an entry

2) long right click => the context menu stays open for the length of 
your mouse button press. It'll close when you release the mouse button.

So what you'll want to do is to only invoke the right click action 
shortly (execute a short press on the remote), so the context menu 
stays open for you to make your selection.

Best regards, 
Felix Schwarz