I am not sure where he gets his defination of "cactus buck", but in my mind, a cactus buck will never shed his antlers because he has no testicular intervention (no male hormone). It is the surge of testosterone in the fall that makes the antlers shed their velvet and antelers harder and the cessation of the testosterone in the spring that makes him shed the antlers.
In my mind, this buck had all the right equipment and hormones, he was just on a different biological clock than the other deer. Mutant, surely, but not a cactus buck.
Bottom line, WOW! I would mount it just the way he shot it.
txhunter58
venor, ergo sum (I hunt, therefore I am)