Is this a precursor to resignation?
One could hope, a little, but that would mean that Joe Biden becomes President. At this point, perhaps, that may not be entirely a bad thing.
Said before, famously, quote attributed to Harry S Truman, “If you can’t stand the heat, get out of the kitchen.” Also, quite surprisingly, elected in his own right in 1948 after Thomas E. Dewey was declared the winner.
Chance that Obama will resign versus vacation is nil.
I would take Joe Biden as President in a second compared to this dude. Before this I thought Biden was a buffoon, but just a typical self interested politician. Obama is a mission to radically change this nation.