Holdup, your user avatar can be a GIF too?!

Yes, pay attention to mention of “shedding”. They think that vaccination causes the PT in question to shuck it off as though they were Pigpen from Charlie Brown cartoon.

Odds are low, but not zero. Still a bit of a nothingburger now that we’ve been able to successfully land probes on asteroids to sample their contents (and even send back video similar to images taken by Mars rovers). Strap a small thermonuclear warhead to an unmanned probe and redirect its trajectory - not a simple matter but entirely feasible.