You're right about the chick most likely being shrink wrapped. I basically worked up from the pip to get the pointy air cell end of egg off, then wet the white membrane to see if there are active blood veins still, they will be large and red. Inactive ones are about a hairs width and pinkish. If there are not active veins start slowly peeling membrane back up from pip. Don't be surprised if you get the chick free and its still stuck with vein and cord to bottom of shell, set it back in incubator and let it dry, it will fall off eventually give it time. If it doesn't look if it's still red, if it's brownish tan you can cut it. Good luck, I hope you have success. Please let me know how it goes or if you have any questions please ask, I will keep checking in this evening.