When Asteroids Become Comets Asteroids can become comets. they can develop coma and a tail. what would cause a course correction is a simple jettison from its tail
Imagine an Alka-Seltzer in water. When it's fizzing it will propel around in the glass. Radiation pressure and solar wind cause a comet to have a tail. Now let us assume for a moment that the entire orbit of the object has varying degrees of solar wind and radioactive pressure, You have to think of space in incredible detail, it's not just this big emptiness, My assumption is Oumuamua hits these high solar pressure areas and it fizzes, The jettisoned force from the tail will change its course without doubt. now, what happens when it's no longer in these high areas of solar radiation?
It's a comet or an asteroid. it's simply getting closer to stars and this causes it to form a tail in the high-pressure solar winds. as it exits these areas it loses its tail. It's a simple "space weather phenomenon".