Did this really happen? Large blow up crab on the AGC building?

A large blow up crab perched on the AGC building on Westlake Ave in the late 90s maybe early 00s. It was probably 20 feet long or bigger and was coming over the southeast top corner of the building.

I would take the bus southbound on I-5 a lot and would see that big crab on the AGC building across Lake Union. It was the highlight of that view at the time, along with the Kalakala.

But nobody I ask remembers this crab. And I can’t find pictures of it. I’m thinking it was an advertisement for Mccormick & Schmicks Harborside, the seafood place in that building. I can see that they’ve done the blow up crab thing before. But I can’t find a picture of that particular one on the AGC building. Anybody else remember it?