How incredibly unfortunate. I have been a defender of GT since it was brought into the pack - because I enjoyed the style of play that it offered. I like complication and tedium as much as I like simplicity and creativity. I've argued balance vs. nerfs until my fingers hurt, trying to foster the idea that all playstyles in the sandbox are equally valid (and invalid).
None of this matters, now. The simple question any user needs to ask themselves is "do I trust the creator of this code?" to which the obvious answer for anyone with a sliver of common sense is a resounding "no", regardless of the petty circumstances surrounding it.
I don't say this as a programmer (who's code of ethics is demonstrably violated here) because I'm not - I'm on the security side of the IT house. In our terms, there are 3 basic pillars to security; confidentiality, integrity, and availability. I'll let you decide which ones have been violated. The choice to remove his code from my system is an easy one.
What is unfortunate is the lack of a good, reasonably complex and lengthy tech mod to fill the void. Until that one comes along, written by a trustworthy and talented coder who isn't a raging douchebag, I fear my worlds will be a little less interesting.