Well the news is out now that Hamilton's appeal has been 'inadmissible' by the FIA which is a big blow to the McLaren Mercedes team. They were confident that they could get he result overturned but the FIA has rejected the appeal. As drive-thru penalty's cannot be appealed McLaren were always fighting a losing battle to make it stick. McLaren based their whole case on last season's Japanese Grand Prix, where an appeal was heard about whether or not Liuzzi should have been handed a 25-second time penalty for passing Sutil under yellow caution flags. That punishment was in lieu of a drive thru penalty that is normally handed down for such offences. Lawyers for McLaren had argued that, while drive-through penalties are not susceptible to appeal, 25-second time penalties are. The judges said the Fuji case was not relevant because "none of the parties concerned had raised the inadmissibility of the appeal in that case."
The main problem here is that Hamilton drove his heart out in one of the best races ever, and its a shame he lost out because of his mistake. People would not have reacted this way if it was a normal race but under the circumstances they feel differently.
Fans who think the FIA is trying to discourage overtaking because of this are just totally off the mark. There are rules which all drivers have to stick by and cutting chicanes will give any driver an advantage. Not one driver on the F1 grid supported Hamilton's move and felt that he was in the wrong. In my opinion it is just bad luck and just inexperience on the part of Hamilton. Either way he looks favourite to win the inaugural night race in Singapore, with the rain gods increasingly looking likely to support him.
Including the Belgian GP Hamilton has been impeded 4 times this year, others being the 5 penalty gird position in Sepang, 10 place penalty following his crash into Raikkonen at Montreal, and drive thru penalty at Magny-Cours. All have been justified and I dont think there is any bias on the part of the FIA. Have some of them been harsh decisions? yes for sure but that's Formula One. Juan Pablo Montoya has been penalised numerous times and so has Fernando Alonso in controversial circumstances.
Hamilton has to put this behind him and go out and win that title, that is if the team can manage to do it wihout making any stupid mistakes.
In closing, I dont think McLaren have ever won a battle with the FIA, maybe getting a new legal team will be a good start...