I have a small amount of experience with this kind of stuff (gov't assualts on Internet activists through property seizure, collusion with the private sector, etc) from reading Glenn Greenwald and some others and here's my take: the gov't has been cracking down on people suspected of DDoSing the credit card companies a few months back in the name of anonymous and wikileaks; I read a thread somewhere about the FBI raiding a house with guns drawn to go after the OP's 13 year-old son, who the mother said was absolutely innocent of using LOIC to do this at all.
I think you, and possibly your neighbor, might have become victims of this kind of shoddy, falsified intelligence work. Back when the "war on terror" was really hotted up after 9/11, there were tons of stories of Muslims being erroneously charged with terrorism, like the time with the "Detroit Sleeper Cell" that turned out to be just some impoverished Detroit Muslims; the FBI took wild liberties interpreting a disturbed man's doodles to be some sort of terrorist plot. Well, now the intel agencies are a little more restricted in their ability to harass and intimidate innocent Muslims (well, as long as they're within our borders). But as we've seen with the story about the 13 year-old, these agencies are still quite willing to harass and intimidate online activists, accusing them of being "hacktivists" and seizing their property. And we've also seen that companies such as google are quite "in bed" with the gov't whenever they ask them for the data in the name of "the war on terror."
TL;DR I suspect that google disabled your account at the behest of the gov't who are in turn serving credit card companies mad about being DDoSed by Anon who was mad at them for stealing money from wikileaks, who the credit card companies say violated THEIR terms of service.
The question remains, despite the link to Betsy Perry's G+ post which has been repeatedly posted in this thread in order to discredit you, is which term of service you violated in the use of your gmail account? Google refuses to answer this, which is what makes me most confident that some homeland security BS is involved here.