Indifferent league form, particularly away from home, appeared to be swept away in the cup, but West Ham were the fancied side having overcome Manchester United and Sunderland away from Upton Park.
It was Spurs who won the day, however, will a thrilling 3-2 victory that included a stunning strike by Sergei Rebrov.
Clem, on the comeback trail after injury, remembers the game well, but insists it will count for nothing at the weekend.
"It was a great game and probably was the high point. That's already forgotten now and it's going to be a tough game on Saturday.
"They've got a new manager and some new players now. They've had a bit of a struggle, but have done quite well at home.
"The manager was under a lot of pressure and they had a couple of big defeats which didn't do them any favours, but they're back on track now and doing okay so it will be a tough game. They are all tough in the Premiership though."
The pundits mostly had West Ham down as favourites ahead of the cup encounter, with Spurs cast firmly in the role of underdogs.
"I think we probably did last season because of our away form, we couldn't win at all in the league and were a bit low on confidence with not having great results - even though we were doing well at home.
"It has probably changed around a bit now, we made some great signings in the summer, and hopefully it will be a good game with us getting the three points."
7/4 on a Spurs win at Upton Park, and it's 28/1 for a repeat of that 3-2 scoreline - click here for details.
Stephen Clemence describes last season's FA Cup quarter-final win over West Ham as a 'high point' of the campaign.