How is it off topic to identify the specific shihan being referred to? I mentioned Saito because Homma's column makes more sense if you know he is referring to.
I don't know if there is, as Giancarlo reports, bad blood between Ikeda and Homma. But it is relevant to know if Homma is referring to Ikeda, because the young Ikeda had perhaps the fastest suwariwaza I had ever seen on video. I used to watch him and think, "boy, I wish I could do that." But knowing what we know now, then I can look at his suwariwaza video with a new perspective. Perhaps, as Homma says, that kind of skill comes with a price we might not want to pay.
Looking forward to see you at Yamada shihan's 2007 seminar in Manila. Please send my regards to Giovanni sensei.