iRule - conflicting with IE

Could you add a little more logging to the iRule to grab the path, referer and then in each of the flows just to track how the request is being handled? That may give a better picture of what's going on.

when RULE_INIT {
   set static::expires [clock scan 20110926]
}
when HTTP_RESPONSE {
   HTTP::header insert "Strict-Transport-Security" "max-age=15552000; includeSubDomains"
}
when HTTP_REQUEST {
    set refer_host [string tolower [URI::host [HTTP::header Referer]]]        
    log local0. ""
    log local0. "Path: '[HTTP::path'"
    log local0. "  Referer Host: '$refer_host'"
    log local0. "  EndsWith referer_check_filetypes: [class match [HTTP::path] ends_with referer_check_filetypes]"
    log local0. "  Contains referer_allowed_hosts: [class match $refer_host contains referer_allowed_hosts]"

    if { ( [class match [HTTP::path] ends_with referer_check_filetypes] ) and 
        ( not [class match $refer_host contains referer_allowed_hosts] ) } {
       log local0. "[IP::client_addr]:[TCP::client_port]: hotlink detected from Referer: $refer_host for [HTTP::host][HTTP::uri]"
      log local0. "  Redirect user to home page (http://[HTTP::host])"
      HTTP::respond 302 "Location" "http://[HTTP::host]" Cache-Control No-Cache Pragma No-Cache
      return
    }
    if {([string tolower [HTTP::host]] starts_with "www.")} {
        log local0. "  Host contains WWW. Redirect to 'https://[string range [HTTP::host] 4 end][HTTP::uri]'"
        HTTP::redirect "https://[string range [HTTP::host] 4 end][HTTP::uri]"
        return
    } elseif { [TCP::local_port] == 80 } {
        log local0. "  Local port is 80. Redirect to HTTPS (https://[HTTP::host][HTTP::uri])"
        HTTP::redirect https://[HTTP::host][HTTP::uri]
        return
    }
}