Wow, sure whatever.
Bunch of crap.
Now as someone who has worked with 'emotionaly disabled' students (and still do to a lesser extenet). The main tools are
1. Staying calm no matter what the student does.
2. Removing them from the situation and giving them a chance to reassert control.
3. Planned ignoring (something teachers loathe)
4. Reinforcing positive behaviors.
Now in one of my buildings (and in many in my district) there are students who will get into trouble just because the want the physical comfort of restraint (sounds strange doesn't it). So what they do instead is have a bean bag sandwish (two large bean bag chairs), the student lies on one with other on top and a staff member applies moderate pressure to the top bag. This provides the body stimulation that the student was seeking other than the restraint.
So I would say there are probably better ways to meet the students needs, over stimulation is a huge issue, removing the student for five minutes might be more effective. (Except no body wants to pay for staff.) Outlawing alcohol would really help, due to FAS. (FAS fetal alcohol syndrome is a real problem, outlawing wouldn't work unfortunately)