the centrifugal forces at the root of a 10kg blade at 2700 rpm may be in the region of 50 tons whereas the total thrust from the propeller is only likely to be in the region of a few hundred lbs. The resulting vector will therefore be within a fraction of a degree of the axis of the propeller blade.
Might be a bit more than a few hundred but will still keep keep the vector well inside the blade geometry. Where as the further out you go it quite quickly gets non-linear if its not rotating.
Also as well the whole blade is in tension while rotating and all bending moments will do is reduce one side of it. A static pull will cause compression on some bits.
If the prop is a single unit type ie its bolted on the front and both blades are a single unit it is extremely unlikely your going to do anything to the prop. Fibre props are a different kettle of fish because they arn't very strong in compression and you don't know if the matrix has been crushed with the bending moment.
Some of the bigger props which I call knife props but thats not the proper namr for them have all sorts of handling instructions on them for supporting them off aircraft and also not to use prop stands what ever they are.