Is there a way to perform "surgery" on a workflow execution, e.g. using flyteremote, to change the output of a task to something else and then relaunch/recover? I realize this goes against the principle of reproducibility a bit, but it could be quite expedient for debugging and one-off situations.

Unfortunately this is not possible, but for regular python tasks you should be able to use the

@vscode

decorator: https://docs.flyte.org/en/latest/flytesnacks/examples/flyteinteractive_plugin/vscode.html#flyteinteractive-vscode-decorator

You can perform surgery and launch parts

right, thanks @freezing-airport-6809, so the part i am trying to avoid is having to re-assemble that workflow by hand in a notebook...

Ya that works too