Why did Yogendra Yadav quit (or was expelled from) AAP

Yogendra Yadav's explanation is he questioned a candidate. He felt the candidate did not deserve to represent AAP. So he was ousted.

Kumar Vishwas once said Yogendra Yadav expected to become CM as he had Prashant Bhushan's support and believes he is intelligent (reference KV speech after Yogendra's exit) so he was not willing to hear others.

Atishi said that compromise was worked out between Yogendra and Arvind camp but Shanti bhushan said No. Hence Prashant Bhushan withdrew, so Yogendra withdrew and then Arvind also withdrew.

Reality may be somewhere in between.

I have not heard Arvind Kejriwal speak on this yet.