There is really only one question with this, did they cross?
No they didn't at the time of the throw (apparently it is clear from video). The wording of the law isn't exactly obvious though:
"together with the run in progress if they had already crossed at the instant of the throw or act."
So the throw seems obvious enough - the time that the ball leaves Guppy's hand (so one run + the 4) but what is the "act"? When it comes off Stoke's bat? Are they talking about someone kicking the ball, rather than throwing?