The 28-year-old was heading for the exit door at Spurs before coming off the bench and netting against Leeds just before the January transfer window closed.
Spurs boss Harry Redknapp refused to sanction a deal to take Pavlyuchenko back to his native Russia and his cup goal sparked a run of nine in eight games.
Cup dream: Pavlyuchenko
He is now in contention to play against Portsmouth in the semi-finals at Wembley this weekend.
'Not many teams get to play at this stage of the competition so we are thankful to be there, but my attitude is that we should aim to win the cup at all costs,' said Pavlyuchenko.
'Wembley is the best stadium I've ever played at and so it is every footballer's dream to play in a game like this. I'm sure it will be packed with fans so I'm looking forward to it a lot.'
Pavlyuchenko, the £13.8million signing from Spartak Moscow, described his mentality before he broke back into the team under Redknapp.
'I wanted to remind everyone that there is such a player as Roman Pavlyuchenko and that the transfer to Tottenham was not in vain, for him or the team,' he said.
'Reading the press, they almost forgot about me, then there was different speculation about where I would be sold during the transfer window.
'I wanted to remind people Roman Pavlyuchenko can play and is a good footballer.'
On-loan O'Hara tells Tottenham: I'm a big fan, but I still want to see you loseRedknapp tells Pompey: Don't forget what a good job I did at Fratton ParkTOTTENHAM HOTSPUR FC