Looks like you have anew shoot forming so don't give up hope yet. Phrags are very forgiving if there is still some life in them. I'm not a fan of keeping these in hydroleca clay pellets . I always use NZ sphagnum ( or any sphagnum for all it matters ) mixed with large perlite. This gives the plant moisture and firmness of planting. Keep the sphagnum moist - but not over wet for this specie.Stand the pot in cold water and then leave the rest to the plant and don't feed for a month or two or until you see that new roots are well on the way.
Some other growers will tell you their methods but I'm only saying what works for me.
Best of luck with it.