Intangible tanker

I seem to have found a variant of the invisible/flickering tanker glitch already mentioned on the bug page. Rather than just being invisible/flickering (which it did do), the tanker was also completely intangible whether it is visible or not, landing a helicopter on it was impossible as was jumping out of a helicopter and falling onto the deck, either case just results in falling through into the water below. Even taking one of the ladders on the side of the tanker to the top caused the chatacter to fall through the deck of the ship and into the water below. Fortunately, the objective to land on the ship triggered even when the helicopter passed through the deck, and the target was available to hit with helicopter weapons despite falling through the ship too. 
 This was on the Xbox 360 version of the game, and the mission was granted from the Villa directly to the East of Rioja Safehouse number 9, Camp Altitude.