Blaming a third party lacks class. The Reddit guys made the decision to rely heavily on EBS, and it came back to bite them. They show a lot of character by taking responsibility for an outage they had very little control over.
"Hi Mr. CIO of Amazon. You realize we had a 6 hour outage on one of the largest sites in the US because of you. We don't want to badmouth your service but we can. Care to pay more attention now?"