Sainath's Advice on Sunday, August 21, 2011 :
From what you have stated, it does not appear to me that you are falling short in technology. It is evident that you are already playing the role of a manager and in the right manner. It is not about how many certifications you have against your name, though it definitely helps, it is about whether you know enough to be in a position to handle anything that is thrown in your direction. Good managers have this quality - they will always know enough about everything, and are always in a position to quickly find out should the need arise. They always have a starting point in hand from where they can quickly progress forward.
I will not say that one can completely leave the technical aspect and succeed on the managerial path. Trends are changing rapidly and managers are expected to be technically knowledgeable more than ever before - to be in a better position to take good decisions.
You are on the right track, by clearing the Service Operation exam and by targeting more such exams you should be in a position to target the SDM - Service Delivery Manager role given the kind of job profile you hold at this time.
Please do a search for ITIL and SDM on the career forum and you should find many posts which might be of use to you.