I thought the couplet was ramping down for a couple of scans but held my words for the time being... sure enough, the TDS and couplet seem to be increasing in intensity again due south of Yazoo City. The debris ball even shows on reflectivity.
This reminds me of the 12/1/18 Illinois outbreak in a way. Small, generally unimpressive on reflectivity supercells "punching above their weight" with large, significant TORs. Also spinning up with little lead time, often the initial warning today has been a TOR-R based on a radar TDS and only THEN does the couplet ramp up.