In the inquest scene, do you think Olyvar was acting on orders from LF? Notice that he tells the "truth", but omits any details about how he first met Loras (working for LF). The idea would be that this would create further chaos by openly pitting the Tyrell's against Cersei and the faith militant, creating opportunities for him.
Is Durran Godsgrief a reference to Durin from Lord of the Rings? In addition to similar spellings, Durin kept being reincarnated, in his children, taking the titles Durin II, Durin III, etc. Similarly, the eldest sons of House Durrandon were named Durran.