He constantly claimed to have made a "Titanic II" build larger than the one that Bones4, myself, and a few others have been working on, and claimed to have done it much faster. After putting out every excuse imaginable as to why he will not post a screenshot or load the save, he eventually linked an image of what he said was the build.
It was an image of Bones4's old 2/3 scale Titanic, on the original Slate map.
LegoTween98 is now permanently banned from Bones4's server for build stealing (even though there is nothing to suggest that he actually has that save, he still claimed credit for work that was in no way his).