The phrase "roll back on" is correct and usable in written English.
You can use it to mean to reduce or reverse something, such as a policy or procedure. For example, "The mayor decided to roll back on the controversial regulations against local businesses."
As the Tsipras government conducts fraught negotiations with creditors at the EU and IMF, and is increasingly compelled to roll back on pre-election pledges, Golden Dawn has cast itself as the one force that can institute the punishing austerity demanded of Greece in return for bailout funds.
If Sky can drive demand for the technology then there's always a chance that the BBC will roll back on their current decision.
"On the other hand," he said, "in all three circumstances we may be able to push the boulder partway up the hill and maybe stabilize it so it doesn't roll back on us.
"The last time Mitt Romney said, 'I'll roll back on the rules on Wall Street, let's unleash Wall Street,' which is of course where he made all of his fortune," Mr. Axelrod said.
Last weekend, Lynne Featherstone, the equality minister, promised delegates "no roll back on equality".
The prospect of renewed political strife in Greece coincided with mounting dissent withinSyriza over the extent to which it should roll back on pre-electoral reforms.
After that, I felt I was unlucky in Abu Dhabi when I blocked a ball and it rolled back on to the stumps.
Rolling back on this puts everyone at risk.
She lets out a big sigh and rolls back on the sofa.
The armoured vehicles rolled back on to West Florissant Avenue minutes after the shooting.
But in practice, the Bush administration has rolled back on that commitment.
