For some reason, I missed that game but heard all about it from my dad, who echoed your comments. Greg was a big favourite of mine at the time, especially when we had the ineffective Bernard Lewis on the other wing (I think !)
In a different way Toshack was unplayable too and for memory no Division 2 centre half could handle him in the air. It took a game against Arsenal in the FA Cup against Ian Ure to show how his aerial threat could be nullified. But of course he improved immensely after his move to Liverpool.