It's easy to forget Seedorf is only 21 with only a handful of first team appearances. My biggest criticism of Hastie in the first team was his choice on when to pass/cross and when to take on a man. That comes with experience though, and experience earned by playing games.
I doubt it's anything to to with arrogance; suspect it's more to do with wanting to make a difference. Like Robinson said after the game, there are a lot of young players out there who sometimes play too much attacking football instead of doing what is best for the team (and for game management).
Of course, if he doesn't improve his pass selection, then I might need to change my opinion.