@Rockster Thank you for reaching out to us!
Roll back is not an option in Azure migrate. However, you mentioned it is a Dev server and there were no changes made to it since migration, that allows you to shutdown Azure VM and turn on your on-premise machine.
So, a short answer is = YES! :)
Reference link - https://learn.microsoft.com/en-us/azure/migrate/common-questions-server-migration#is-there-a-rollback-option-for-azure-migrate
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