Are you aware of any real world “the throne denies him” moments like Joffrey had when the unnamed but badass knight provoked him after the Blackwater?

Well, the term “real world” is tricky, because there are PLENTY of examples from the chronicles of ungodly kings or lords being struck down by the wroth of God for their actions, although coincidentally this seemed to happen a lot to people who touched church property or got on the wrong side of some powerful churchman. 

Whether these things actually happened as chroniclers recorded, or whether the monks who wrote the chroniclers indulged in some propaganda to frighten credulous laymen into toeing the line, is up to the reader.