Thanks for your post! I'm not sure I can tell you how the entire SDSRA would call this, but I can offer what I would call. I like to think I'm fairly plugged in with what's going on.
You have already identified the 4 requirements for a throw in:
- faces field of play
- part of each foot on or behind the touchline
- uses both hands
- delivers the ball from behind and over his head.
In both scenarios you have identified, all 4 criteria are met. So my question is, what's wrong with the throw? Granted it is not 'perfect' but it is no reason to stop the game and re-take the throw.
I've heard of this USSF interpretation as well and I believe that's what they taught us many years ago. The game evolves every year and I'm not sure if CSA has come along with another guideline.
As far as I'm concerned if the 4 criteria are met then the throw is good. Get the game going. Players would rather kick the ball around than throw it anyway!
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Mark Wilson