return from hospital to prison? Shiu is a gentle soul whose only "crime" is peaceful civil disobedience, not a vicious thug who needs restraint to ensure public safety. A token pair of handcuffs would be more than enough precaution against the unlikely possibility of him taking flight.
There are two possible explanations for this security overkill. One is gratuitous nastiness on the part of a government whose velvet glove is increasingly coming apart at the seams. The other is that the powers that be are more afraid of the democratic opposition than they would ever admit, even to themselves. Either way, they should all be sentenced to go away and read the works of Thoreau for a while.