His expressions as they ran towards the car says everything...May be this scare of nearly loosing Shivaay might be the wake up call he needs...that he can't be vulnerable anymore ...he needs to be strong for Shivaay and of course Rudra.Imagine a protective Omkara trying to get to the bottom of things...He is someone who can't hear a word against his brother without erupting violently...And here is Shivaay's very life is threatened.
I was thinking the same, till now Omkara had the support of Shivaaye, but now he might realize that if Shivaaye is not with him, everything might just get over. Especially the protection shield on Rudra would be gone. I think this will make him more responsible and loving