From watching the preview of the next episode carefully (end of episode 1), I noticed an overwhelming response to Minnemanns performance.
Petrucci: "that was f*ing great"
James Labrie (to Petrucci): "that was the most incredible... by far" (I'ts hard to see which drummer this statement was meant for. Pausing right before it zooms into James (same shot/scene, one of the first few frames) Minnemann can be seen very clearly in his epic Cookie Monster shirt (lol@myepicnerdiness)).
Minnemann is such a boss. If it is him, my life is complete haha.