We have discovered that Rudytudy14 used a security glitch to gain access to Divinity's file manager and delete first the old server files and then a few days later the new files.
While he was a strong suspect the whole time, we have finally discovered what glitch he used (and fixed it) and it revealed an IP leading to his hometown, so there is no uncertainty that he has betrayed all of us as petty revenge for his demotion.
That he was an unworthy admin is now proven beyond any doubt.
There is only one punishment for the crime of attacking Divinity's core systems: persona non grata. He is hereby banned from DivinityCraft forever with no possibility of pardon.