Perhaps this link will help Steelers fans come to grips with the fact that the NFL rules still protect a player who runs before throwing the football from blows to the head.
League's Official Player Safety Rules
The following information regarding player safety is included in the 2010 League Policies for Players manual, which is distributed to all players and coaches at the start of training camp.
It includes detailed information on illegal hits, including diagrams. We hope this information is helpful in understanding the NFL's player safety-related rules. There has been no change in rules since the start of the season, only an increase in the level of discipline for violations of existing rules.
There is even a picture about two thirds of the way down the page, so that illiterate NFL players, and their fans can SEE what an illegal hit to the QBs head looks like (no joke).
From your link, down at the bottom:4. Protection While Out of Pocket. When the passer goes outside the pocket area and either continues moving with the ball (
without attempting to advance the ball as a runner) or throws while on the run, he loses the protection of the one-step rule and the provision regarding low hits, but he remains covered by all other special protections afforded to a passer in the pocket.
If a passer outside the pocket stops behind the line and clearly establishes a passing posture, he is covered by all of the special protections.
By that definition, yes he's guilty and I already agreed that he will be fined. That will only last until Cam Newton lights up a safety trying to take him on just a foot behind the line of scrimmage. Defenders cannot be hamstrung like that if the QB has turned into a runner, and Colt certainly looked like he was running until Harrison was already launching himself (LEGAL if done vs a runner capable of protecting himself).
The bolded is what people are trying to argue. I have no doubt that Harrison was trying to throw a haymaker hit. He had a legal (and yes, to all the tools claiming that helmet to helmet is
never legal, look it up or, if you're too lazy to do that just open the dozen links provided in this thread stating that helmet to helmet hits only protect defensless players ie passing QBs only until they pass the LOS, recievers that have not completed a catch and had an opportunity to protect themselves, players fielding a punt and kickers) chance - or so it appeared .4 seconds before Colt passed the ball, to light him up.