Solid, that worked!
#this is pretty dirty, but it works.
from javax.servlet.http import HttpServletResponse
jsonObject = system.util.jsonEncode(LISTOBJECT)
HttpServletResponse = request['servletResponse']
Response = (HttpServletResponse)
Response.addHeader('Access-Control-Allow-Origin', '*' )
writer = Response.getWriter()
writer.println(str(jsonObject))
writer.close
return None