“doctrinal concern is that he may be considering allowing communion to those in a second union without the necessity of an annulment.”
I hope not! It cost me a lot of time, and friends when I converted just to be eligible to receive. Like it was said, “the way is not narrow”. Ugh. If they got married, then they have to live with their poor decision. Nobody forced them to get married. They made some bad choices and those choices have consequences.
With reference to the issue of giving communion to persons in a second union (because those who are divorced can receive communion, there is no problem, but when they are in a second union, they cant ), I believe that we need to look at this within the larger context of the entire pastoral care of marriage.
It sure sounds like he is at least considering a change here, no?