Matt, I'm sorry to say I saw no sharks at all on any of the wrecks we dove. The dives are still awesome, coral growth aplenty and lots of little sweepers etc. I have a Truk Lagoon gallery on my website, << fletcherforbes.com >> if you want to see what some of the wrecks look like.
Sean, I guess you were talking during the briefing. JJ, the Odyssey Captain said that "R2D2" and the engine room were not in the part of the wreck that had collapsed, but it was in eminent danger of collapse. He asked us not to ask the divemasters to take us there as it was unsafe, and they all had families who depended upon them.
We talked about it with our dive master Ken, and he did not want to make the penetration, so we respected that.