The outgoing CHP leader also said he believes in the sincerity of a message of sympathy he received from “Pennsylvania,” in a clear indication that he had contacted Fethullah Gülen, a preacher, prolific writer and advocate of interfaith and intercultural dialogue, after the release of the videotape. Gülen lives in self-imposed exile in a small town in Pennsylvania.
(from Kikapu's link above)
For me this is the most interesting part in this whole affair...Baykal has signaled that he has been in touch with Gulen (or vice versa) and he believed in Gulen's sincerity (meaning Gulen had nothing to do with this affair)...It shows that Fethullah Gulen's shadow is all over Turkey,and he has the means and the arguments to convince the most prominent champion of secularism(Baykal) of his innocence...
We live in interesting times indeed...I will venture an educated guess.Erdogan or the AKP had nothing to to with this. It was in their interest to keep Baykal where he is because he was not an efffective politician,and he would make sure the AKP votes would be maximised...Hence,the whole affair has nothing to do with the proposed constitutional changes,the CHP would push ahead with their challenge in the Constitutional Court,Baykal or no Baykal...Think about it...Who knew Baykal's affair with this MP,and who could organise to be present at the right time at the right place to take the video...??? I believe the culprits are within Baykal's own circle in the CHP who knew this was the only way to stop Baykal from being elected yet again to the position of CHP general secretary,and hence to the position of Opposition Leader in the coming CHP congress (in 2 weeks I believe)...Nothing else makes sense to me...