That seems like both the left's best case scenario and what is most likely to happen given the polls and early voting totals (higher turnout being awful for Trump and deflating his position in the polls).
Texas may actually flip if enough non-likely voters show up, and they have already surpassed the 2016 totals in Austin, Houston, and the Valley. Not a highly likely scenario, but if Texas goes blue he'll be toast on election night and you'll see the remaining Trumpists exodus and act like they were never die hard supporters while Trump starts loading the plane for the Seychelles.