That was absolutely ridiculous at the time, but it was during the days when Ferrari and the FIA were close allies which is no longer the case. I was a big fan of Alonso then and I remember feeling pretty hard done by. His comments about F1 not being a sport anymore were great as it showed a driver in the heat of the moment and is something which is rare these days apart from Hamilton a few weeks back. There have certainly been some odd/inconsistent decisions over the years but I though 2010 was the most impartial I can remember. I hope we are not slipping back into a rut where certain drivers are picked on more than others and stewards take no notice of punishments handed out previously for similar infringements.
Last year Hamilton got scott-free several times; he was reprimanded twice, if I am not mistaken, for racing in the pitlane, he skipped the pitlane entry in China and entered pits crosscountry style, after an almost U turn, then he got that most strange penalty for overtaking the SC, which led to a change in the SC regulation this year (all those explanations about the first SC line and being able to overtake the SC before it crossed the line, and the need to check GPS data to be sure of whether Hamilton had broken the rules were bullshit, because there was nothing in the Regulations that contemplated such possibilities), he was also the last (and only) driver to be allowed to get back to pits without enough fuel in the car after qualy.
The impression that last year was impartial or less conflictive than this year has a lot to do, IMO, with the fact that the most vocal Hamilton fans did not have a reason to complain, because every controversy in which he was involved was resolved in a favourable way for him. In contrast, stewarding this year seems fair in Spain, and last year it seemed very Hamilton biased. Alonso received several penalties that were not outrageus per se, but that benchmarked with the number of incidents he was involved in, and compared with Hamilton situation, were perceived as out of proportion.
The problem with Hamilton, IMO, is that he is involved in more incidents than any other driver. He drives on the edge of the regulations, and thus he has to be frequently picked, or unpicked, by stewards.