This can be decided once it's absolutely clear what he actually did. It's not a "disgraceful finish" (as said above) if it was driver error, he was on dries after all. However, losing 18 sec in one or two corners is strange, especially considering that there was no indication that he'd left the track.
Spent a year watching an F1 season and it is spoiled by a stupid decision from Timo Glock. He should be ashamed of himself, what gives him the right to swing a championship in that way.
Hopefully when the full onboard races are available we'll be able to see the race from Glock's car to determine what happened (i.e. whether Glock slowed intentionally to let Hamilton through or if it was raining too much for him to keep pace). It doesn't matter though, because the result's the result and that's how things are.
Massa deserved not to be let down by his team and his engine. Even if you go with the conspiracy rubbish how many points did Hamilton 'lose' this year? 2 at Belgium and...? How many did Massa lose? 10 at Hungary (engine retirement) and 10 at Singapore (Ferrari pit mistake).