Geez Darko, either you are losing it or you made the observation of a lifetime.
I'v been thinking along the same lines as @sockeyed. If there it was indeed an orca, and this being salmon season with commercial boats on the water and anglers lining the banks, not to mention all the recreational boat traffic and tugs on the water, there should be other reports, cell phone footage...
You may want to reach out and share your sighting with one of the cetacean sighting websites: Ocean Wise is one, or DFO has a ph# to call into.