Can "dirty snowball" comets do this? Perhaps this is evidence for electric comets?
Comet McNaught, also known as the Great Comet of 2007
SWICS found that even at 160 million miles from the comet's nucleus, the tail had slowed the solar wind to half its normal speed. The solar wind should usually be about 435 miles (700 km) per second at that distance from the Sun, but inside the comet's ion tail, it was less than 250 miles (400 km) per second.
"This was very surprising to me. Way past the orbit of Mars, the solar wind felt the disturbance of this little comet. It will be a serious challenge for us theoreticians and computer modellers to figure out the physics,"
—space science professor, Michael Combi
The Explosive Demise of Comet Linear
A comet nucleus can be compared to the insulating material in a capacitor. As charge is exchanged from the comet’s surface to the solar wind, electrical energy is stored in the nucleus in the form of charge polarization. This can easily build up intense mechanical stress in the comet nucleus, which may be released catastrophically, as in a capacitor when its insulation suffers rapid breakdown. The comet will explode!