Half of me says it’s a pity – he’s a huge wealth of knowledge on many things in life, and always happy to offer advice, especially on workplace issues. I recall at least one user pretty much attributing the fact he rescued his job to TJ’s on- and off-line help.
On the other hand, woe betide any thread on which he posted if his opinion differed to your own. There were certain types of thread that he destroyed just as efficiently as elfinmuppet, but without the comedy pictures.
On the whole, it’s a pity he couldn’t help himself, I’d agree with most here that on the whole, he’ll be missed.