A bit more skeptical
My gut tells me there's more to it than just impatience. If he was there to testify, I'm sure he was on the line with eBay legal at least once a day, and wouldn't leave without their say so. Plus I'd bet money that all ticketing is done through the eBay travel department.
Approval would be needed, if not direct instructions to hop a plane.
Did someone worry that if he was to testify it may set a precedent that would require representatives hopping all over the globe to get sworn in. Or maybe someone decided that they didn't want "on the record" testimony that could come back and bite them in the ass someday.