When Angela is trying out for the derby team, she is wearing the jammer skin on her helmet (the star). It cuts away from her, and then back and the jammer skin is gone, and then cuts away and back and it is back on her helmet.
Brennan does not want Hodgin's to use a power sprayer to wash away the cleaner used on the body as it will wash away the particulate because of the high pressure used.
Hodgins wheels out a pressure washer, this type of pressure washer needs to be plugged in to electricity and a water hose for a water source.
Hodgins could have just used the water hose to wash off the remains and not blown the particulate everywhere.