Cliff seemed to be completely driven by emotional impulses (primarily jealously of JR). He never stopped to think things through - not on business, not in his personal relationships.
Cliff believed JR was responsible for all the bad things that happened to him, but it was always his own decisions that got him in trouble. JR may have laid the traps - but Cliff is the one who blindly kept stepping in them.
I think you are right. Although he was obsessed with JR even before that story, he had a much different personality afterward - more impulsive, more buffoonish,
more spontaneous, less thoughtful until Pam's hospitalization (for a while)
Thought for a Dallas reboot
Much like Dallas the Early years, Bobby hires a biographer. This allows Patrick Duffy to be in the series as a
central character. He can recount the events of the Ewing family as he remembers it, and the other series cast can appear from time to time
as the biographer seeks out other sources. Actors could portray Younger Jock, Miss Ellie, Digger, JR, Cliff, Sam Culver, etc
The biographer, unknown to Bobby could be a Ewing relation (a grandson of Jock and Amanda? Callie's son? an unknown offspring of JR?)