if that rumor is true, the "new" witness that Dave has referred to just MIGHT be him. Croes is certainly an enigma.
I don't necessarily think Croes has left aruba, the statement of some witness "living" in the states (seems to imply not an American, by omission) just made me think of him.
Dave didn't say the nervous witness he wants questioned is in the US. I believe he meant someone on Aruba. That leaves Charles Croes as a possibility.
The comment about wanting to interview some witnesses in the US came from ALE. They want to interview the students.