Wrong is wrong, there's no comparative.

If things can go badly wrong (and trust me, they can and do!), I see no logical or grammatical reason why they can't take a badly wrong turn.

All the same, I didn't like the phrase when I first read it. Now I seem to have become inured to it and it is starting to sound perfectly normal.

..which probably only indicates that I am easily corruptible, which in turn may indicate why things seem to go badly wrong ...