this seems like a very positive development. to me it implies that GERS took some corrective action, appealed to the DTCC and was successful. from reading, DTCC doesn't just drop a chill without addressing the issue.
With the word "This" and "it" he referred to the removal of the DTCC chill. So this isn't connected to your action. You said it yourself. Keep it real. In doubt, ask him....he will be probably glad to explain "it" to you.
So they just "responded" to your complaint and the chill was off days before.
ALL IN THE FUTURE? My god. How wrong I've been to rightfully think the SEC doesn't care about your "complaint" and that your "complaint" has a will be largely ignored.