An editorial entitled ‘Flyjin’ rather few took a look at a recent survey by Tokyo into proving that flyjin exist re-examining how information is delivered to foreigners. JT says:
That survey seems to imply that many foreign residents did indeed become "flyjin," [...]. The survey, however, also confirms that the vast majority of foreigners in Tokyo stayed right where they were — in Tokyo.
How does a survey imply anything? And the vast majority did not stay where they were; as the Mainichi’s report says:
Meanwhile, 56 percent of the respondents said they did not leave Tokyo following the disasters, while 5 percent had moved to the Kansai area in southern Japan or other places within the country.
The headline figure was 25% returning home temporarily, but as the survey notes, it was 56% who "stayed right where they were", hardly a "vast majority". I’m not sure where the other 14% went – did they move from northern Japan to Tokyo or did they leave and not come back? Can anyone get a hold of the full results? UPDATE: The full results are found here. 5% moved southward, 2% evacuated to evacuation centres, 3% did other (I hope some headed north to volunteer!), and 9% did not answer. Note that the poll also says that the 169 people respondents were contacted by email and fax, and the sample was obtained through International Exchange Groups and Foreigner Support Organisations, and given that just 25% were company employees, this sample would barely touch the "true" flyjin, the worker who downed tools and left on the first flight out.
[T]he governor of Tokyo, Shintaro Ishihara, inflamed the controversy by exaggerating the extent of foreigners leaving the country and impugning their motives for leaving.
Did he? I’ve never seen a quote to either effect, although I suppose it is easy (and intellectually lazy) to reflexively attach any nasty comments to him.
Similarly, those Japanese who remained in Tokyo were not necessarily acting out of national pride or bravery; they may have been too terrified to go anywhere.
That sounds kind of microaggressive to me, as well as wishful thinking of the same kind you are ascribing to the anti-flyjin.
The survey did little to better understand all Tokyoites’ complicated reactions to the crisis.
Err … oh sod it, 
The survey, interestingly, did not determine exactly how many of those 25 percent eventually returned to Tokyo.
All 25%, at a wild guess. I’d have thought as the press, you’d have got a full copy of the survey and have no need to presume.
The metropolitan government should prepare a means to give all residents of Tokyo, whatever nationality they are, trustworthy information during emergencies so safe, sensible decisions can be made.
But, you said earlier that many people were "instructed [to leave] by embassies or employers", where from what I heard the employers were on the whole foreign ones, and you also chose to ignore that another main reason for leaving was being "strongly urged by families abroad", according to the Mainichi.
Next, Japan Times is running a microaggression poll, with, as has been pointed out earlier, three "yes" answers and one "yes, I don’t mind it", but also features the dreaded gaijin word, not once but twice. 
PS: Can anyone find data for a survey of Japanese who left Tokyo? There’s plenty of data regarding Tohoko evacuees, but not Tokyo.
