I'm sure R.C. Sproul does believe in God's ordination of events. However, we do not know what that ordination is before it happens. So we are called to do what we believe it is God has called us to do and then to leave the results up to Him.
Other than that I would urge you to listen and read for yourself what Sproul has said on the matter.
If that is the case, you cannot possibly know if most events are predestined/foreordained or a simply a result of a free will decision by a man; can you? It is kind of useless to watch something happen and then say it was foreordained or predestined.Sort of like predicting an event after it occurs.