If the Tories sack May and re-cast themselves as a Remain party, with Corbyn staying as Leave - then I'd go against my entire voting record and personal beliefs and vote Tory, as the least worst choice.
If it was Tory vs Labour with both advocating Brexit then it's easy to vote Labour, unless something astonishing happens and a third choice appears.
If the Tories sack May and re-cast themselves as a Remain party, with Corbyn staying as Leave - then I'd go against my entire voting record and personal beliefs and vote Tory, as the least worst choice.
If it was Tory vs Labour with both advocating Brexit then it's easy to vote Labour, unless something astonishing happens and a third choice appears.