Because it's an easier way to restrain No.6, that's why!
It would appear that if the reason for his resignation cannot be tricked out of No.6, however they are well prepared to "beat" it out of him. But in having done so, have they not "damaged the tissue?" And even now, having taken a beating for his pains, No.6 is still not prepared to talk. In fact the only good thing to come out of all this election rigmarole, is that the pair of mechanics, who No.6 dealt with aboard that jet boat, during his attempt to escape during the election period of Free For All, eventually got their revenge upon No.6.
Your own reporter
Photograph by No.113b
Be seeing you