Is 'disorientation event' a common term among biologists?
As sort of a "teach to fish" answer, let's approach how to answer a question like this:

Google Scholar is a pretty good index of scientific literature: good enough for this purpose. If you search:

"disorientation event" -turtle

you will return all results that use the specific phrase "disorientation event" except those that mention turtles.

You can also do the search:

"disorientation event" turtle

to find the turtle papers. As of today, "disorientation event" returns 57 results; 14 also include the word "turtle", 43 do not.

Among the 43, it looks like the majority of papers are discussing human disorientation, particularly in the context of human pilots but also in the context of cognitively impaired individuals or simply lost pedestrians. There is one paper that uses the term referring to rats in a maze-like task.

Overall, these results lead me to conclude that "disorientation event" is not a common general term used by biologists to refer to non-turtle species losing their way, although I would also say that I would expect a biologist to understand the meaning of the term given sufficient context.