Sorry to hear it was so rough. This topic of zoa toxins is incredibly fascinating... it's such a common coral in the hobby, yet very few people have the misfortunate of getting it into their bloodstream system or into their mouth/eyes. But when it happens, it sounds absolutely awful.
Had a quick web browse... the section under 'Dangers' on wiki here:
http://en.wikipedia.org/wiki/Zoantharia
a TFH article here:
http://www.tfhmagazine.com/details/a...thid-toxin.htm
The original scientific research paper cited by the TFH article:
Moore, R.E. and P.J. Scheuer. 1971. Palytoxin: A New Marine Toxin from a Coelenterate. Science: 172 (3982), 495-498.
http://www.ufpe.br/gpa/images/docume...palitoxina.pdf