The dev's mistake was bringing on IE in the first place. The guy is a liar, a swindler, and a fraud. The only reputation that was ruined was his and those of his fanboy shills.
The dev knew what IE was, and brought him in anyway (it was public knowlege - if he didnt know, he was negligent or didnt care)
IE, IE's people and the general community were all the victims of the Developer. Sure, you can be happy that a known scammer got his due (IE), but you can then look to the developer and his actions since then and judge him accordingly. The way it looks from the outside is that he is either incompetent or malicious or both.
Like I said, bringing him on was a mistake. They were momentarily conned by a con-artist. In a year it won't matter.