Yes, you can. Simply select disconnect in the Lumia Share application. When doing so, your Lumia also won't automatically connect the next time.
- Can I create a Storyvideo in the Storyteller app on my Lumia Tablet?
- Can I share my Storyvideos using Storyteller on Lumia Tablet?
- What is the Storyteller app on my Lumia Tablet?
- Can I edit content in my Storyvideo on a Lumia Tablet?
- Why does Storyteller on my Lumia tablet pair automatically with my phone's Lumia Share app?