I disagree to ban Snowshow because of his drama creating non sense thread about Bitcoin, but I agree to ban Snowshow because of evading ban. I think theymos itself don't like a user which evading ban, I believe he can easily investigate by the IP address and if it's same, theymos can directly ban all of his accounts.
The rule against ban evasion is rarely enforced, and is generally only enforced if the person has caused major problems in the past. I think the administration would rather have someone participate in the community in a constructive manner than someone be excluded from the community. If someone is participating in the community constructively today, in general they will likely be allowed to stay, even if they have an old account that was banned.