As much as I despise Cody's cocky attitude and the dirty moves he's pulled off, he doesn't drive formulas for a living, so he's (hopefully) learning with his mistakes as he goes. Igor is an experienced driver IRL and should know better. I adjust my criticism and expectations according to that fact.
Also, after looking at what happened with Cory at Spa several times, it's possible that he made a genuine, noob, mistake, by trying to get off the racing line. The thing is, when you rejoin the track, you always keep on the side you joined from, not only to avoid what happened, but to avoid bringing dirt or gravel all accross the width of the circuit. The problem was his tires were dirty with no grip and the car behind was coming faster than he thought. If it was on purpose though, I think he should have been DQF immediatly.
Also, from Miyazono POW, whatever happened with Cody could be seen as an accident and not a deliberate stupid block/move, given that Cody had crashed and joined from the grass on to the track. What Mika saw in front of him however, was a clear as water dirty, sneaky block, from someone who (hopefully) wouldn't do it while driving his PD sponsored formula car IRL.
Finally, let's not ignore the fact that Mika kept the car on track and managed to avoid an accident and a penalty by not cutting the corner (which Igor used in his favor because he knew Mika would get a penalty for cutting the corner). A corner cut after that illegal, dirty block should be allowed, but Mika played safe and clean.
Doesn't make it less dirty. Quite the opposite imo. People have realistic expecations when driving at this level, both for racing craft and for sportsmanship. They all love racing and watch racing series. Igor even drives formulas. So, when you're confronted by a dirty move no one would ever try IRL in a formula/high downforce car through Eau Rouge/Radillion, you get even more pissed. I know I did because I expect the best from the best and from Igor especially since he's the only one racing IRL, and sponsored by PD.