By Alek Arend There’s a popular theory surrounding Tom Brady and how his retirement announcement got leaked. Last week ESPN’s Adam Schefter and Jeff Darlington dropped the bombshell news that Brady is retiring. Brady and his camp immediately pushed back against the report. But the report ultimately proved to be true, as Brady announced his retirement on Tuesday morning. So what changed? There’s a theory that Brady was planning to announce his retirement on the final episode of “Man in the Arena,” which is how ESPN got the leaked information in the first place. Since ESPN spoiled Brady’s announ…