I saw someone on blender artist forum asking about it. And I've already done some trials and errors with my previous attempt at making an unbevel feature for blender. So I attempted it again this time.
And one day later, here is the said feature. Currently it only works on Ringed Path selection pattern.
See thread post #4 for how it can work on the BlenderArtists forum.
Is there going to be an update for 2.8 of this addon?