Did you read the article you posted a link to? As I understood it he never suggested that. He commented about others suggesting it.
The Hayes and Harlington MP reportedly said: “I was up in Liverpool a fortnight ago where Alec McFadden, one of our (union) organisers, launched the Sack Esther McVey Day on her birthday.
“I spoke at a packed public meeting ... there was a whole group in the audience that completely kicked off quite critical of the whole concept, because they were arguing ‘Why we are sacking her. Why aren’t we lynching the b........?’”
I think it's fair to say he views Esther McVey as a "b........" and that he was paraphrasing the remarks at the public meeting, putting his own interpretation on what was being said - that's how it comes across to me anyway. In any case, if he was only repeating calls for her to be lynched why did he not take the opportunity to condemn such disgraceful behaviour?