Towing off wet campsites

Ok.Whats the caravans stance on towing MotorHomes Or Car & Caravans off of wet fields.The reason i ask is we were on a certain campsite last year which had a lot of rain.on arrival i was told where to pitch due to weather which was no problem.On arriving at pitch i mentiond to warden that i might get stuck as my motorhome weighs in a 3.5 ton & would he tow me off if needed.His reply was a definite NO.It is not the clubs policy to tow viecles off if this happens.Any comments would be most welcome.Anybody found this RULE in caravanclub Book ?