Have to say, I don't really follow most of this logic, particularly ending this cut if you believe you're at 14-15%. Why not push down to 10-12%?
The bodyfat you're at now should be your new "ending a bulk" point, not your "ending the cut" point, IMO.
You're on wayyyy too many compounds at way too high of a BF to worry about losing much muscle mass right now. You just went flat and are freaking out at scale weight and feel like shit.
If you think your body needs a break from dieting, consider hitting a 2-4 week maintenance phase and then push on. I think you're in serious danger of trying to "rebound" from a too fat position and being back here in 3-4 months going "what happened, I'm fat again!!!".
I agree with dropping the T3 to 25, btw. In fact going as high as 50 this long might be a big part of your issue.
Just IMO of course. I've just seen guys make this mistake so many times, and am afraid you might be doing the same.