If it's been 2 weeks in the primary, why not rack it over to secondary once you are close to FG? Barring any arguments of introducing oxygen or potential contamination issues. Is there any other reason? For context, I currently have a stalled fermentation at 1.046 SG which was supposed to end at 1.030. OG was 1.126 and has been in the primary for about 2 weeks and hasn't moved on SG for about 5 days now. My thought is that whatever yeast that is still alive should be suspended in the beer itself. Yeast cake would theoretically at this point just be dead yeast. Racking it over would just give the yeast a bit of oxygen and a good swirl which at this point wouldn't really hurt anything (again assuming we don't inject a ton of oxygen or contaminate). I can always add some more yeast, but more interested in the thought of just racking over to secondary to see what happens. Thoughts?