A man who entered ICE detention healthy and able to work is now struggling to stand without a cane, suffering severe pain, numbness in his hands and debilitating insomnia, according to his family and advocates. A newly shared video from inside detention shows Guillermo 'Memo' Gallardo Barrera describing his rapidly worsening condition and pleading for medical help, claiming that the only relief he has received for his severe pain is ibuprofen. M…