I guess that the sentence should have read 'in die *zin* dat ...', i.e. 'in the sense that'.
Regarding the 'stretching' part, I found the following link that may be pertinent:
http://www.nlm.nih.gov/medlineplus/ency/article/003299.htm
It is an article about 'Decerebrate posture', which is defined as follows:
'Decerebrate posture is an abnormal body posture that involves the arms and legs being held straight out, the toes being pointed downward, and the head and neck being arched backwards.'
Among the causes 'head injury' and 'Increased pressure in the brain from any cause' are mentioned.
HTH