Correctable or not

[Dan_ref]

As Mark points out this is correctable but I would add the
following. IMO by rule shoot the FT and continue the
game from there, not from POI. In practice shoot the FT &
give the ball to B at the POI. Here's why:

First, yes there was a change in possesion,
in fact there were two, giving the ball back to A. I
believe we should treat as if there were no change in
possesion, because effectively there was none. This seems
to me the intent of the rule which seems to say
go to POI only if B has possesion. Second, this double
change of possesion mess could have been avoided by the
R wiping away the travel after it was realized
there was a proper 2-10 challenge. Yes, B1 should have
known to play the whistle but this is a case where the
referee should have stepped in & done the right thing,
which IMO would have been to shoot the second FT & give the
ball back to B at the POI.