Hi, need more info, how long have you had hammer,did you QT, dip, have other euphy's , any signs on them ?
params ,clear pics could help .
EEFW ? Hope not...
Looks a little pale IMO, it could also be that some peraters have shifted (light intensity,nutrients, flow, etc.) And now it's just growing in a different way. Very very very very unsual for self skeletal canibalism.
To me it just kinda looks like at one point it was that skinny and now its growing/splitting.