I also am having oscillation trouble with my probes and it seem related with Remotetech. So i install a fresh new KSP (with unplugged joystick) and my probes work fine. And then i install Remotetech (ver. 1.5.2 with modulemanager 2.5.4) Since then, my unmanned crafts (very basic and tiny probe) oscillate when they are far from Kerbin (Say 40,000Km). I'm still able to control it but with less precision. If i disable the reaction wheel, the oscillation is still present with the same amplitude but with a slower frequency. The trouble is patched if i install Mechjeb and use the "Kill rotation" mode. I run KSP32 bits on Win7.