Congratulations!
OK, this is actually pretty far outside of the OpenEars purview since it isn’t really designed as a research tool that propagates every available Pocketsphinx function through to an Objective-C interface, but it should be no problem getting it answered as a Pocketsphinx question over in the Sphinx forums as long as you are very precise:
http://sourceforge.net/p/cmusphinx/discussion/help/
I answer these ones occasionally when it’s fairly self-evident in the Pocketsphinx codebase, but this one is not to me (and if I’m not mistaken, it also looks like it might be different for LMs versus FSGs) so it’s probably a better call to go to the source. Once you know the C implementation details, I can help you with the details of returning the data through OpenEars if needed.