Hi Trinity,
We always warn people that there is a real chance of your award being downgraded, or removed, at the MR stage or appeal. Whilst the Tribunal Service have to warn the claimant, and let them withdraw the appeal, if they are considering reducing or removing the award, the DWP do not have to do this before they undertake a Mandatory Reconsideration. Of course, the MR decision is still appealable but no payment would be made whilst awaiting the appeal if the award were to be removed at MR stage.
We usually recommend having a good look at your award to get an idea of how 'safe' it is (although there are no guarantees) but I'm afraid the decision has to be yours alone.
Nothing on this board constitutes legal advice - always consult a professional about specific problems