Eminem in the Rap Game

I just listened to "Rap Game" by D12 featuring 50 Cent from the 8 Mile soundtrack again, after a long hiatus.  It's a great song, D12 and 50 have absolutely dirty verses.  But the clear shining point of this track is Eminem's verse (see: Rap Game Lyrics).  
Some excellent excerpts:  "Now put that in ya little pipe and bite down/ Think for a minute cause the hype has died down/ That I won't go up in the Oval Office right now/ And flip whatever ain't tied down upside down."  I believe him.  I really do.
"Can't tell me shit about the tricks of this trade/ Switchblade, with a little switch to switch blades/ And switch from a six to a sixteen inch blade/ Shit's like a samurai sword or sensai." Great flow from line to line, leading to a very clever ending: "I'm this way, still tell that utslay itchbay/ Ucksay my ikcday, 'scuse my igpay atinlay/ But uckfay you igpay."
Dude rapped in pig latin, how many people have done that?  With a C. Delores Tucker reference to boot, I would put this among Eminem's top verses of his career.  Only down side?  Makes me miss the old him.  Don't get me wrong I enjoyed Recovery but that flow, lyrical content, swagger, all gone.  He has resorted to punchline rapping nearly exclusively, the style prevalent in the music of Lil' Wayne.  He may be lost for good at this point, only time will tell.