Clones actually start to 'sex' when they are taken. This is completely normal. Nothing to freak out about. While the 13 hours of lost power is unfortunate, it is doubtful that a half day will greatly effect them as long as you keep everything in check from here on out.
I can't get too scientific as to why, but when you take clones they will sex for about 2 weeks or as long as it takes for them to root, be transplanted, and get back into a solid vegetative state, and then continue going about their veg growth characteristics. Flower growth will not continue as long as you're in 18/6 or 24/0.
*Many cloning solutions are simply weak flower formulas, as the high Phosphorus & Potassium content assists in root development (the clone can't really use Nitrogen unless it's foliarly fed until it has roots to uptake that nutrient). It could be this flower formula that helps stimulate these small pistols/hairs)*
Good luck with the clones!