Rather like the Pamchenko, the timing's just not possible. He would have to throw her, set up for his jump, jump while she's still in the air, land before she does and check himself enough he's in position to catch her. Forget blades to the head, he would have to throw her high enough to do a quintuple twist to give himself enough time for that. I never thought I'd say this but the Pamchenko is more believable.
I agree the spots are mostly to cover up the skating doubles, but my mother (apparently my whole family watched this--I'm rubbing off) mentioned she thought it was also to hide that they were using the same rink for everything. And my brother, whose knowledge of figure skating is equivalent to my knowledge of Aussie-rules football, had the sense to ask "Since when is Chicago in the northeast?"
I also think they made a serious programming error running "The Cutting Edge" right before this movie, because it only emphasized that Doug and Kate were NOT the same actors, or even believably older versions thereof.
Oh, and my brother also had another good point--even if Doug and Kate conceived Jackie the night of their Olympic free program, she'd still only be about thirteen in 2006. So either she's VERY mature for her age, or the first movie goofed and Doug and Kate were at Sarajevo (making Doug a member of the 1980 "Miracle" men's hockey team.)