I think hubby's employer is going under to be honest.
clearly it is not HIS money to keep back but has to be used for the purpose for which it was deducted
He should ask / demand where the money is
like you know " Mr Boss the money was taken from me by you where is it now ? " It is not the boss-man money to do what he likes with ( interest free loan etc ) and the fact he has played fast and loose sounds bad
I HOPE it is in a separate account but probably has been mingled ( unfortunately for hubz )
whilst awaiting an answer - goggle quistclose
and or read this
http://www.ucl.ac.uk/laws/commercial/docs/ICR_Uncertainty_Quistclose1.pdf
you blood will run COOOOLD but you will see the importance
and there is a lot on quistclose