Update after Canada.
Code:
Title: >126
Contender: >84
Cut line: 115.5
Vettel 161 "Safe" Title
Button 101 Contender
Webber 94 Contender
Hamilton 85 Contender
Alonso 69
Massa 32
Alonso has lost his last attachments with the "contender" category. Theoretically he can recover that position in the next two GPs, but it is going to be hard. Driver's talent and team resources are a plenty there, though.
Hamilton is now in the edge of that same "contender" zone. He needs to produce podiums to recover into it. On the other side, Button is "safe" as contender; problem is that while Vettel go on in "Safe Title" zone, "Contenders" is a meaningless concept.
Vettel will "need" two zero-points GPs to go to the edge of "Safe Title", thus Seb is well safe by now and the rest of them are mere bystanders of the Championship. Very clearly this is a title that only Vettel can lose, nobody can win it from him.