1. You believe the flood of Noah was probably local in nature and not a global event.
2. The Rainbow (according to scripture) is a sign that God has covenanted to never doing that to humanity again.
3. There have been instances of humanity being wiped out by local floods since the time of Noah.
Therefore, if the flood of Noah was indeed local in nature, you must believe God has gone back on His promise, right?
Good question. Perhaps the tale of the promise got globalized along with the Flood.
Of course he is throwing the Bible under the bus. Mormons do this all the time. Most Christians interpret the Bible to fit their beliefs.
If there's room in the doctrine to speculate, then it is valid to speculate.

