Lol okay, so I just wanted to get it perfect. 
So, to test out the unblockable, you want to have Ryu as player 1 and Akuma as player 2. Record the following setup and then replay and try to block it.
The setup is have your opponent in either of the corners then do the following:
forward throw, immediate far st. mp whiff, forward dash, jumping lk (with OS sweep)
This jumping lk will be unblockable. If they are holding an direction except for down-back (down and towards the corner), they will be standing and YOU will be in the corner now. Finish the combo with cr. lp, st. hp xx lk Tatsu, hp srk.
If they were holding down-back, THEY will be in the corner and in crouching position. Finish the combo with cr. lp, st. hp xx hp srk or whatever.
If they backdash, you will be in the corner and your option select sweep will catch them.
If they do any strength of Shoryuken, your option select sweep comes out but you can punish with st. hp xx lk Tatsu, hp srk.
If they focus absorb and backdash away from the corner immediately, your cr. lp will hit them perfectly during the 9th frame grounded frame of Ryu’s backdash. So you still can get a full combo. However, if they focus absorb, wait a little, and then backdash out, they will get out.
If they Ultra or Super, you will be in the corner and they will throw do the Ultra/Super in the opposite direction.
So, there it is. If you guys are not getting it, try using turbo on mp at first to help you time that whiff far st. mp IMMEDIATELY after your throw is done.
Important note:
-If you get the far st. mp perfectly, the above outcomes should take place.
-If you time it 1 frame off, the above outcomes take place with one exception: if they lp or hp srk, your jumping lk will reset them (which is very bad since it leads to very little damage). But the jumping lk will still be an unblockable.
-If you are 2 frames or more off, the jumping lk will NOT be an unblockable any more. However, it will still create a very ambiguous and weird situation. So, it’s not even that bad! :bgrin:
And I’m testing it as of right now on characters. Right now, I only got it to work on Ryu. More to come!