Chaim Shaulson‘s Hebrew language blog, In the World of Haredim (בעולמם של חרידים) posted (6/1/19)
Rabbi [Yaakov] Bleich [Chief Rabbi of the Ukraine] resigned from the Conference of European Rabbis after Dayan [Menachem] Gelley [Av Beth Din of the London Beth Din of the United Synagogue] went to America and examined the suspicions against him[Bleich].
This report is consistent with the facts I know. The recent resignation follows his earlier removal from the Conference’s website which I reported on March 31, 2019. Before his removal he held a number of important positions at the CER including membership on their Executive Council and their Presidium.
I read this resignation as a face-saving move by Bleich to avoid public expulsion. Though, of course, I expect Bleich to offer a different explanation. In my opinion, the public interest would have been better served if there had been a public statement of his removal and the reasons.