Seattle has screwed up every time they had a solid drive going. Just because their chosen method of screwing up was drawing penalties don't blame the refs. If that offensive lineman doesn't hold Matt is sacked instead of throwing to the two, it was the right call.
With all due respect, if it was a clear call, I would agree.
But in all honestly, I have seen the same thing on both sides...and it is ONLY called when it matters and ONLY on the Hawks.
That is a different issue. It calls into question the solidity of the refs.