In the above image provided it is Important to note the time stamp on the microwave pass (2312Z), so if this was proof of an extra eyewall, it would have been from an eyewall that has already cycled, not of one currently undergoing a replacement, nor about to do so. Recon has made no mention I can find of concentric eyewalls, I have not seen that NHC has as much as speculated, and it is very uncommon for Cat1/2s to undergo an ERC. More likely what we are looking at is just a well-curved inflow band, rather than remnants of a former eyewall.