Not heard this rumour and probably would have done if it were true. If you are going to use a winch then you need dispensation from the CAA and then doesn't come in a packet of Kelloggs. You can't just fit a winch and start winching.
Maybe someone trying to wind you up about the precarious position of RAF SAR! It wasn't the two ex SARFC now working for the enemy was it? No scruples these people.