With that pattern they showed rockets firing into each other if you think those are rocket burns. http://Www.hq.nasa.gov/pao/history/sp-350/i4-8.jpg
They look also like an explosion pattern with the bulb framework producing the 4 direction pattern.
Besides, what in tos ever got rocket burns? Weapons damage and explosions, but rocket burns?
Still looks like a blown light bulb.