Last year, The Flash was hit with a shocking casting shakeup when Hartley Sawyer was fired from the series due to offensive social media posts. At the time, fans were left wondering how the series would handle Sawyer's character as Ralph Dibny/Elongated Man had become an important part of Team Flash. Then, last summer, series showrunner Eric Wallace revealed that the role would be recast for a brief appearance in Season 7 in order to tie up loose ends and write the character out of the series for the immediate future while also concluding Sue Dearbon's (Natalie Dreyfuss) story as well. Now, in this week's episode, "Mother", that promised resolution arrives. Here's how they did it.