There were a lot of people very happy about the DBC and Chychrun trades when they happened (not everyone, but a lot), but they didn't come with extensions. So you have to ask, what will one think sometime in the next year if there is no extension? Because Korpi is going the other way, it's hard to see this one being as catastrophic if that happens.
Also, this tells you what the market really was. Boston is not stupid. They took the best deal they had. Not unlike unloading DBC a year ago.