Firstly, I apologise Piper for engaging in the 50 shades banter, when that was clearly inappropriate. Your distress is palpable, and after reading some of the additional, and more informed, comments, I am more understanding of why.
Nonetheless, and I apologise again if this is out of place, to me there is something which makes me uneasy about a dynamic where a man (who has power in society) introduces a woman (who is socially in a position of inequality) into a relationship which relies on her submission (or brings it out in her, if you want to give this a consensual nature); and then withdraws that with no discussion. And yet, still wishes to exert/experience control in the non-sex side of life. That is like having your cake and eating it too.
I think you are right to stand by your instincts that this has undermined your trust and your belief in the relationship; because someone who had your best interests at heart, would sit down and discuss this and treat you as an equal partner who was in a changing situation. He is no longer writing the rules, and he does not seem to be either understanding that, or facing up to it.
You cannot kneel in front of someone who has disregarded your feelings and well-being to this extent, who has only told you this by text, and call them 'sir'; that would be utterly humiliating (I think). He broke the dynamic already, for reasons you are not at all clear on (and it would be wrong to speculate); and if he was happy for you to do this, then to me, that would take a formerly consensual dynamic into the territory of abuse (though I would be tempted to try it and see how he reacted, just to see if he was prepared to see you accept this position, which would not be an act of care on his part, but one of control).
If I should keep out of this, then I will do so - and apologise again.