MPs from the Democratic Unionist Party (DUP) may join forces with Britain's opposition coalition to back customs union amendment, shuttering United Kingdom prime minister Boris Johnson's Brexit plans, according to reports.
The vote on the deal itself was called off until next week after MPs passed an amendment that withholds any approval for the deal until legislation to implement it has been approved as well.
At 3pm, ministers voted in favor of the Letwin Amendment - meaning a further delay for the Prime Minister.
"People simply won't understand how politicians can say with one breath that they want delay to avoid no deal - and then with the next breath that they still want to delay when a great deal is there to be done".
He added: "Whatever letters they may seek to force the government to write, it can not change my judgment that further delay is pointless, expensive and deeply corrosive of public trust".
The EU, which has grappled with more than three years of tortuous Brexit crisis, was clearly bewildered by the contradictory signals from London.
Mr Johnson's Foreign Secretary Dominic Raab has claimed the Tories have the numbers to get the Brexit deal through Parliament.
It added: "Parliament needs a straight up-and-down vote on the deal - do MPs want to respect the referendum like they claim to. or do they want to frustrate and cancel Brexit altogether?"
The vote flew in the face of opinion polls showing strong public support for MPs to back the deal and finally resolve the Brexit saga.
The Prime Minister appeared, in his words, to appeal to European Union leaders not to grant an extension.
DUP Brexit spokesman Sammy Wilson said they supported the so-called Letwin amendment "as the only avenue available to properly scrutinise the deal on offer and attempt to secure changes that could address some of the concerns we have".
He had hoped to pass his own newly struck deal at an extraordinary sitting of parliament on Saturday but that was derailed by a legislative booby trap set by a rebel lawmaker concerned that Britain might still drop out without a deal.
Former minister Amber Rudd said she and most of the 21 Conservatives kicked out of the ruling party over their bid to block a no-deal Brexit would support the deal and there was "a fragile but honest coalition of people who want to support it".
A representative from the Scottish National Party said they would be "considering the wording of anything put down", and had not yet reached a decision on how to vote on any legislation. The law is very clear he should have signed one letter. DUP MPs said they could not give the deal their consent despite the support of it by their ERG Brexiteer patrons.
Johnson may actually be relying on European Union leaders - like French President Emmanuel Macron - to take the initiative and ignore his letter and deny an extension although Germany's Chancellor Angela Merkel said this week if MPs reject Johnson a delay is inevitable.