The TDP has been updated to allow for the quick release of the IWB strap.
To take off the TDP simply slide the retention disc away from the knot and feed it through the slot located at the corner of the pouch. Once the disc is on the other side pull the cord to extract the knotted end.
To put it back on simply pull the knotted end through the corner slot followed by the retention disc.
To adjust the length of the IWB strap add a knot to fix at the desired length and then remove excess cord.