Here's an article (Arabic) from the Saudi edition of Al Hayat newspaper. Here's the relevant part translated:
"Al Hayat" has learned that the officials in the Emirates pavilion in
the National Culture and Folklore Festival "Al Janadiriyah" have
removed three young men who were participants in folkloric bands, in
fear that they might mesmerize the female visitors of the pavilion.
A festival official has explained that Islamic extremists had
requested from the pavilion's officials that they remove three young
men who were participating in the activities in fear that they might
mesmerize the female visitors of the pavilion. He noted that his
department had expedited the young men's travel arrangements to Abu
Dhabi.
He added: "I don't know which organization these extremists who
requested the young men be removed belonged to, but we sent them back
home in fear of creating problems in the festival." noting that one of
the folklore bands seemed obviously deficient after three of its
members exited.
Officials have declined to comment on the issue. Al Hayat is a well respected newspaper in Saudi Arabia, and since the story was not censored that leads me to believe that the story has some truth in it. Although it is clear that the deportation was not done by the Saudi government, but by the Emirati delegation themselves.