Once the weigh in starts, nobody can leave the room, as they must stay in the designated weigh-in room and they can do nothing to lose weight, and nothing to gain weight.
Each wrestler gets to step on his designated scale once. If he does not make weight he gets to step off and step on the same scale one more time, for a total of two tries on his original scale. If he still does not make weight he can step on every other scale one time. If there is one more scale, he gets one more try. If there are ten more scales he would get ten more tries.
The wrestler who does not make weight on his original scale is immediately walked to each proceeding scale for one try. Once that every participant in a particular weight has stepped on the scale(s) the weight class is closed, and you cannot make any more efforts after the last wrestler of the day has weighed. Weigh ins ALWAYS start at 106 and conclude at 285 if one scale is used, but can be split up if more than one scale is used. They do, however, have to proceed in weight class order from the weight class which went first on any particular scale.
All of the above listed procedures are relatively new rules, passed maybe in the last 5-10 years. In the old days you could run during the WI, stand on your head, go to the bathroom, spit, throw up, and/or try again at the conclusion of the designated WI time frame. Not anymore.
In this particular sectional I understand there were only two scales, with 106-145 being weighed in on one scale, and 152-285 being weighed in on the other scale. It is also my understandinig that the young man was given two attempts on his original scale, one attempt on the other scale, and he was over weight on both scales. It is also my understanding that the IHSAA was called at the time (prior to the conclusion of the WI and prior to the start of any wrestling). I do not know, however, the particulars or results of the phone call, but it appears as if it was not in the young man's favor.
As far as an official jumping up and down on the scales, I can't confirm the accuracy of the statement or the possibility that the phrase "jumping up and down" is accurate or embelished, but it does sound a bit controversial and unprofessional on the part of the official if this occurred.
Regardless of the outcome, it's an extremely unfortunate situation for all involved.