Yup! Anytime that you want to skip a crate, you can skip your renewal! Just go to your Account and click on Edit. On the top there is a button for Skip Next Renewal.
Once you have skipped your renewal, confirm your new renewal date under Your Subscription(s).
Be sure to skip your renewal before your billing date (Calculate Your Next Billing Date) and remember that if you don't want a crate for the following month, you will need to skip the renewal again.
This way, you don't need to cancel your subscription but skip a crate any time that you need to!