You won't get a remake because it's only meant to handle disconnects from game start, but you should report them for assisting the enemy team and/or AFK if applicable.
If we detect them as assisting the enemy team (and we can do that even if they are playing legitimately for part of the game), we will penalize them if it's not their first offense. Unfortunately it is tough to detect this kind of play without also accidentally catching someone having a bad game, so our detection is quite conservative which can result in guilty players escaping penalties.
If they are AFK later in the game they will get a penalty as well and if it is ranked they will lose extra ranked fortitude and players on your team will get bonus fortitude as compensation.