Did they warn you about the gravitic attraction from Joshua's mass? The ref's are ok because they wear magnetic boots, but if you look closely all Joshua's corner are wearing protective straps in case they fall beyond the event horizon, such is the density of his enormous torso.
I wouldn't pay too much attention to the scales, they don't tell a true story. Wilder can dunk, AJ can't dunk... shows who is carrying the more efficient muscle. Even I can get up there with no training and I am 8 inches shorter... Please tell me who has mandhandled Wilder? Because I've seen him do that to others who are bigger. Wilder has that strong, wire'y strength... don't worry about him holding his own in the strength department.
No. Luckily I was at the back of the hall and only vaguely felt the effects, though I saw people at the front getting sucked in from time to time. No one else really seemed to notice however, so I assume it was a regular occurrence at AJ weigh ins.