Okay I watched the confrontation again. It wasn't that bad the second time I watched it. There was pain in Shakti's eyes, but he covered it with anger I feel. Since I was also writing the update, I couldn't really focus on expressions too much and was focusing more on dialogues.
Remember the scene after the picnic where Kunal taunted the kids? He is a child at heart. He can't take it when something of his is in 'danger'... so when this threat is there of Mauli leaving him, his natural instinct (and most men's, I feel) is to react angrily and mask that pain later. I hope Gajra gives us a break down scene afterwards. Just like he redeemed himself after saying the kids dialogue, he has to redeem himself here too.
I still see chances for Maunal guys. It's just that Dida is being overly pushy.