Then someone needs to explain all that to John, Gareth and Eve because I was repeating exactly how they told it to us, including Gareth begging us to beg them to bring them back.

They NEVER mentioned Russell in this context.

Considering that Torchwood wouldn't be more than six or seven episodes, I doubt that would be a problem since the summer hiatus is plenty of time to bang that out....
Also, the Arrow producers are HUGE DW fans so I don't think they would want to mess with Jack Harkness either.