Crichton, I don't mean to be an asshole, but when you're pressing 32 kg for your working set weight, you just don't get to refer to your "explosive pressing power." It just doesn't exist yet. At 32kg, I would also say this to a woman. This is not an insult. You will press more and get stronger and hopefully develop great strength. Read this thread when you're done with my reply: http://startingstrength.com/resource...ad.php?t=39539
However, your bar speed and strength are fine at this weight; the technique is the problem. I don't know what your technique looks like at lower weight because I haven't seen it, but these reps show a misunderstanding of the Press 2.0. It's not a lean back then press; it's a reach-n-bounce that creates a rebound, off of which you press. Re-read that section in the book and watch the Press 2.0 platform video: http://startingstrength.com/index.ph...g_to_press_2.0
Also one last thing: it sounds like you're hyperventilating or something prior to each rep. Just take a big breath, hold it, squeeze abs tight, and press.