Fair point!

Remove ground control from Owaza? Just kidding.

So perhaps replace the above with (Essentially just breaking it out
into the two technique types ... I have no idea if I am even in the
ballpark with how Owaza works tho):

When the opponent is thrown, two types of joint hyper-extension are
possible, shoulder or elbow, once a joint has been hyper-extended,
further ground controls will not be possible to this joint until
it has healed. If the ground control executed is a strike, further
ground controls are possible upon additional successful throws.

When an owaza technique is applied to the opponent two further
variations of joint hyper-extension are possible, shoulder or elbow,
once a joint has been hyper-extended, further ground controls will
not be possible to this joint until it has healed. If the ground
control executed is a strike, further ground controls are possible
upon additional successful throws.