@bob
Theresa May cannot get her "deal" through parliament. Even if she managed to get DUP on-side (highly unlikely with any backstop agreement) she won't get the ERG Tories to vote with her.
No time for Peoples Vote. EU said no further negotiation. Options would seem limited to cancelling Article 50, an extension or no-deal.
A 1930s style National Government might be the only way to circumvent the impasse. However, that would need a successful vote of no confidence.