Stark starts off as flawed a super hero as you can get. He used to be a weapons manufacturer, so you can in some respects say he is indirectly responsible for all the deaths caused by his product.
During the Crossing, he was revealed to not only be an agent of Kang, but that he had always been. He betrays the Avengers, off-ed Yellowjacket (Rita DeMara) and the Avengers Inhuman babysitter Marilla (note the bloody teddy bear), and ripped out the heart of his younger time displaced counterpart.
A few months ago, in his own title, he gets mind-controlled by a teenager, and kills not only a number of "bad men", he takes out a commercial airliner.
Afterall this, he manipulates poor Peter Parker and breaks Captain America, the Sentinel of Liberty's, jaw.
Can he recover...sure. We all just forget this ever happened and never speak of it or "Civil War" again.