It sounds like it definitely stalled. High gravity starts are tough on yeast and often cause them to stop before reaching their tolerance. This becomes more true if they are not pampered during fermentation.
With high gravity, you definitely need aeration - did you do that for this batch?
Also, are you able to check the pH?
Did your "energizer" look like tan-colored powder?
Have you tried adding some yeast hulls?
You describe a stench, and usually yeast smell "yeasty" but they don't really stink. Does it smell like sulfur?