I suspect Wednesday's Appeal Court judgement is the real reason for the delay to the ballot.
Excellent link regarding ST NF, at last we have the views of a "real" lawyer concerning the issue. I suspect it would make sobering reading for striking CC's (assuming it was properly understood). Another question they could ask themselves is why Unite have not yet pursued the return of ST through the Courts and are apparently "recommending"
acceptance of an offer that would remove any chance of such action in the future.