Honestly, it sounds like Sora got called on being a jerk and behaving innapropriately. The way he is acting now is as expected when a younger dog gets a firm correction. If angel is not obsessing, and it does not sound like she is, I would not be worried.
I would still do with them separate, but I would also start walking them together. Get them to bond that way.
Sora, is young. He needs to be taught how to behave. She did it this time, you need to do it from here on out. Do not allow him to be a pest. Make him behave.
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