Yes the contents of any gel cap can be squeezed out or withdrawn with a needle and syringe.
However this is not medically advisable with any type of progesterone capsule (including utrogestan) if you are relying on it for endometrial protection.
The reasons for this are:
a) impossible to accurately measure dose
b) even at the lowest dose of estrogen, less than 100mg micronised progesterone has not been shown to be sufficient for endometrial protection
c) potential for inappropriate use eg some patients have been rubbing it into their skin in the belief that it will be absorbed - it won't
d) if using vaginally, a pierced capsule is no longer suitable for use as further product is likely to leak out before/during insertion.
If you require a smaller dose than 100mg and using one cap alternative days is unsuitable, you would be much better asking for cyclogest which can be cut down to size, crinone gel, or using a compounding pharmacy to make up the dose of micronised progesterone that you require.
Obviously if someone is using micronised progesterone alone and is not taking estrogen, it doesn't matter if they pierce the capsules because there is no endometrial risk.