How is anything accomplished by this? 47k+ quotes in less than a second, all within a $.01 range, but no trades. Don't you have to execute a trade to make money?
Unless maybe your system depends on bogging-down the quotes in one stock as you trade in another . . (?). Maybe holding the price steady in one stock until another moves a certain amount to come in-line with it? (or out-of-line with it . . ).
It sounds like 2 fast programs competing to out-bid each other within a tight range. Maybe a couple sniffers thought they found something good to front-run , & were jockeying for position . .
Or maybe just a single job gone awry for a bit . .
Interesting link, though - thanks for posting it.