Free agency doesn't end at an arbitrary time in March.
When Dan Quinn told reporters he thought the team "nailed it" in free agency, the vast majority of us had already moved our focus from free agency to the draft. There were a few pieces written that suggested the Falcons were done in free agency, and while that's almost never accurate in late March or early April, the team did seem to be winding down.
The reported interest in former Giants safety Stevie Brown is a useful reminder that Quinn's rhetoric is little more than that, whether he signs or not, and I'm actually quite grateful for that.