The actual recommendation says this:
"The new offer is based on the old offer that you declined during the summer, however it does now have some improvements and safeguards as well as including a phased return of staff travel and some additional intervention by ACAS for the people who have faced disciplinary action.
Contained in the offer from Mr. Walsh, you will notice his insistence that your union recommends the offer or it will not be made available for you to vote on, denying you your democratic vote. For this reason alone, your union will fulfill that request, because to do otherwise would be to deny you an opportunity to vote."