Well here's what i wrote him back:
"aw, hey, I should apologise too, I probably got a bit too down on the whole thing... I just had some bad experiences with remakes in the past and it's probably made me overly precious about the whole thing whereas I really shouldn't be. I appreciate that you're doing it because you like the game and you want to learn, and hey, the last thing I should be doing is to discourage anyone from learning }:-).
It's true that I am working on Space Giraffe which is my own evolution of the ideas in T2K, but I'm moving away from it being just "pure Tempest" and introducing some stuff which I think gives it its own identity without remaining too closely bound to its history, so I don't think there's any conflict in what we're each doing.
I really don't want you to have to shut down your work since it seems that you;re doing well and impressing a lot of people and that's really good going for such a short period of development!
So if you want to, do go ahead with my blessing and if I can help in some way let me know, I'd be happy to do a bit of play testing if time allows

.
Cheers, and sorry for sounding like such a grump on the YakYak board, I didn't mean to imply that you should stop or that I was upset at you, it was just me being a bit too sensitive I think

."