The "dead man's curve" involves HEIGHT and AIRSPEED. It doesn't matter what you are doing at the time (the helo doesn't care whether you are approaching to land, cruising or taking off).
IF you are at a height and an airspeed that is defined within your curve, and the engine stops, then ....BINGO
Provided your flight is private, you are perfectly entitled to fly cross wind to and from a site. I would suggest, however, that to maintain your mantle as a 'professional pilot', you know what to do when things go wrong 'out of wind'......
pleasant flying.........