Yes, there is.(also is there any way to stop them from transferring devices. Once pokepast.es is dropped id prefer teamsharing to not permenantly put a team on all devices i ever use.)
Go into settings, uncheck 'download teams from server'. They'll stay backed up on the server, and won't automatically download to your device. If you do want them to download to your device later, just re-check it and they will sync automatically.














