Replay takes data privacy seriously. Recordings can be shared, but you control who has access to them, and we need to know who owns each recording. Our user accounts are currently based on Google auth, so you have to log in before recording so we can track ownership.
Afraid not, sorry. The recording and debugging process is the same whether it's an end user or QA submitting a report, or a dev making the recording yourself. All recordings have to be uploaded in order for our backend to do the replaying work. It takes some pretty massive EC2 instances to make the replaying process happen - it's not something you'd be able to run locally.