My Polish ain't what it used to be, but i'm guessing he said it wasn't his fault.
The vid's not the greatest angle, but if you look closely, Hamilton was following what appears to be a dry-ish line. Kubica took a much narrower line (probably the correct line for a dry track ?) and just tagged the rear wheel of Hamilton. Judging by the onboard footage later in the vid, visibility was really really bad and with the tiny little mirrors on these cars, i doubt Hamilton would have known where Kubica was until it was too late.
As far as the drive through penalty is concerned, if that had happened at the first race of the season, then i doubt very much Kubica would have been penalised. But, because Hamilton was leading the championship and Alonso had crashed the FIA felt it was a correct penalty, if only to put a bit of distance between Kubica and Lewis. This isn't a new thing for the FIA/Bernie to do when protecting the championship outcome. On many occasions in the climax of a season drivers have been told not to interfere with particular driver battles. eg. Mansell was told in very plain English to hold back at T1 when Senna and Prost were fighting for the championship at Suzuka. The last thing the FIA want is for a back marker or midfield charlie to take revenge or otherwise and mess with the championship result.
However, In my opinion it was more of a race incident than anyone's bad or aggressive driving.