Board Thread:The Flash discussions/@comment-9346948-20181205013242/@comment-27700324-20181206035044

The Speed Force made the remnant to keep stability. In the episode of Season 2 titled the Reverse Flash Returns, Harry explained that the Speed Force kept Thawne safe like a bunker so a paradox like Flashpoint doesn't occur once Eobard is erased. So he keeps on killing Nora and getting his plan stopped in 15 years after doing that, but he can't do much else. Then Flashpoint happens, and he can make a remnant of himself to do all the things the original Eobard was supposed to do, and he can hang with the Legion of Doom.