That 3rd link was a difficult but interesting read. It talks about the case of a couple of guys who go caught red handed NSS'ing  on the big boards and using options to reset the 13 day delivery period. I don't fully understand the mechanics of how they did it, but the end result was that they were able to reset the clock on the delivery date for the naked shorts. In one example they will buy back shares for one day and then reshort.

I think that something similar is being done on TECO. I see the same clique of MM's all the time on the L2's clearing out bids and moving down the ask and dumping into the hands of usually CSTI. Somehow they are playing hot potato with the naked shares moving them around to reset any out of the money shorts due to trigger a failed delivery.