None of these methods really satisfy me. They either leave remnants of the logo, or blur away all the detail. One more thing I'll try is to composite the logo out by replacing the lower right region with the same image from one of the VHS dubs (I believe Jaiman Tuckuh came up with that idea a while back). I'm skeptical that these logos can ever be killed to my satisfaction, but if this is anyone's specialty, feel free to take some of the stills from earlier posts and see what you can do with them.
P.S. I've got a lot more to talk about in another post, but I'd like to mention the fourth still (above) is from a TMC broadcast I captured. You'll notice it's a little over-saturated. TMC broadcasted the theatrical version, and left in some material cut from other broadcasts (The Mariner urinating in the cup). The audio won't be usable, since TMC is a Spanish channel (imagine my surprise when the Narrator announced "Mundo Aquatico!") I also did a capture from USA, which looks the same as the Bravo version, except a little less noisier and brighter. There are no major quality differences between these, but it's nice to have options for those shots when a huge animated Bravo add pops up and covers half the screen!