I can't say it's totally surprising. Most of the country's exports are in big dollar items like aircraft, construction equipment, locomotives, etc.
When you have a big company like GE that does a lot of business using the Ex-Im bank, either directly, via their locomotives, or indirectly, aircraft engines, you have to expect them to take that into account. The failure to reauthorize the Ex-Im bank can directly impact their bottom line.
When you look at the facts that the Ex-Im bank actually makes money for the country. Its re-authorization has never really been a political issue. It's a very specific set of representatives that have an issue with it...
As they say, elections have consequences.