I didn't know that they digitally erased the hole under Lance Henriksen on the Blu-ray. I vaguely remember Cameron speaking of that goof on the DVD commentary, and that he said that the way it's shot, you're not supposed to look there, so that's how he justified it. Now, I'll have to listen to the Blu-ray commentary to hear if it's still mentioned.
Why can't directors keep their movies the way they were? I'm beginning to wonder whether the digital technology is a blessing or not. Well, obviously it is, but it turns some directors into morons. Vast subject...