I think Larkin was originally supposed to offset Ehn, who is up on emergency recall because the injury put them at 11 healthy forwards (Because I guess Witkowski doesn't count as a healthy forward?) and would need to go down as soon as Larkin returns.
I would assume that as soon as Kuffner/Hirose are eligible to dress (still working out Visa junk?), one of them being able to dress would also negate the "emergency" and require the team to re-assign Ehn. But if they aren't playing this weekend, I'm not sure how the team deals with sending a healthy guy down while they have a guy up on E-R because they didn't/don't have enough healthy forwards.
Not sure how it's going to work now since Zadina is being re-assigned... I guess it depends on how seriously the league takes "emergency re-call" situations. I'm assuming since they are now willingly sending down a healthy forward on a standard re-call, the league will want them to burn a standard call up to give them 12 healthy forwards. Especially considering they would've had 12 by keeping Zadina and swapping Ehn with Larkin. I mean maybe they dress Witkowski at forward while they wait for Hirose and Kuffner to be ready and use Ericsson to E-R a dman? But then wouldn't the league raise questions about Witkowski being a healthy scratch while Ehn was on E-R?
Or maybe they're just going to burn a standard re-call on Ehn until they're ready to put Kuffner/Hirose in?
EDIT: Actually now that I think about it, Ehn's emergency re-call will need to end immediately after Larkin returns to the line-up or they have enough healthy forwards.
If you recall, in Sheahan's lone appearance in the 12-13 season, he was called up on emergency re-call because Zetterberg was banged up and questionable for that days game while they team had only 11 other healthy forwards. Zetterberg ended up playing anyway, and they healthy scratched Tootoo to give Sheahan a look. Since Zetterberg played, it meant Sheahan needed to be re-assigned unless they wanted to burn one of their 4 call ups on him to stay up.
So yea, in a way it probably ends up Zadina out, Larkin in.
Then Ehn goes down after tomorrow's game and one of Kuffner/Hirose play on Tuesday?