Re: Iriminage Question
My technique holds the diagonal to be accurate - same with (what I think you are saying) with "throwing inside." That is to say, the throw happens on a diagnol - really on a figure 8. However, let me also say the check on the reversal is not really located in the angle one eventually enters with. It is more found in the kuzushi (i.e. continuous and not including any reverse motion), the maai (i.e. tight and gets tighter through the throw), the timing (i.e. having uke's forward progress be the main engine for the throw), and the handwork (i.e. which locks the neck so that the kuzushi takes away directional harmony from uke's - the attacker's - motion). Of course, other elements are relevant but these are the more dominant ones - architecturally speaking.