No, because for this incident to become an issue, the lawmakers would have to admit that their incompetence was about to cost an innocent man his life, and that if the real criminal hadn't spontaneously decided to confess and jump he would have got away with murder scott free. And they'd have to take full responsibility for it.
That's just not going to happen. Especially because, if those lawmakers don't see superheroes in a good light to begin with, they won't want to give the people more reasons to favour superheroes over lawmakers (can't you just see Average Joe going all "so those stupid lawyers fucked up and Supes had to clean the mess? Go figure!").