here's my two cents....
From what I gather from the statement, all he is really saying is that he is going to be attending meetings ("limited basis" = infrequently or perhaps Sundays only) again. Big whoop!
Please note that nothing is said about him being "welcomed" by the WT; or if he is DF'd or DA'd (I don't know his status) that he is actually seeking reinstatement. In fact, if he is DF'd or DA'd, he doesn't say explicitly that he will be seeking reinstatement but is deliberately ambiguous about both his intentions and his stance regarding the WTBTS/JWs.
So it isn't quite like he is actually "returning" to the WTBTS (and besides, frankly I am not sure that they would have him back. :-)
To Greg I would say....
Ok, Good for you Greg. Enjoy your occassional meeting. Keep doing whatever you are doing and let the negativity slide off your back. Whatever ulterior motives you may or may not have, I give you kudos for doing SOMETHING whether with your writing, your books, your website or whatever you do. I have the feeling you are going to "revisit" some of that anti-JW material and issues again someday -- and that's alright.