No, "son of God" is a title that varies widely in use.
It might mean a judge, a priest, a special prophet, the Messiah, alot of things.
Ezra was an important priest-scribe during the reign of Artaxerxes.
He helped the Jews back to Israel and had their temple reconstructed.
NEVER was He even called "son of God"
Not once by any Jew.
What small branch of heretical Yemenite Jews is not told in the Quran.
Just "Jews" is stated.
Actually according to Jewish legend in one of their apocryphal books, Ezra himself SEES the Son of God!!
http://www.jesus-christ-forums.com/home/viewtopic.php?t=3711
How Christians view Jesus the Messiah is radically different that Ezra.
We believe that Jesus came forth directly from God, that is our context of "Son of God".
That notion cannot and was not applied to Ezra.
This Surah is plainly wrong.