The killer line here is: "Repeatedly pressed about why Shah was not being suspended, he said the comments were antisemitic but the MP had “shocked herself” and did not mean what she said, so she could not be described as antisemitic."
So these admittedly anti-semitic comments apparently just jumped onto her twitter feed unbidden and had nothing to do with what she thinks, so therefore she isn't anti-semitic because...reasons. Genius.
http://www.theguardian.com/politics/...r-israel-posts