Robbie Keane handed us the lead three minutes into the second half only for Rovers to level on the hour when Benni McCarthy's shot deflected off Michael Dawson, looped over Radek Cerny and in off the post.
With Brad Friedel making saves at key times, it was left to Christopher Samba to provide another late dagger to all Spurs' hearts with a curling finish after Morten Gamst Pedersen won a header from Brett Emerton's free-kick and Roque Santa Cruz rolled it back for Samba to strike.
It was the fourth time we've been hit late after Sunderland, Fulham and Liverpool.
"The effort and performance we put in deserved more than we got," reflected caretaker boss Clive, who overlooked this game and saw Friedel deny Aaron Lennon, Dimitar Berbatov and Young-Pyo Lee.
"The unfortunate thing is that when we took the lead, we lost our way a bit.
"Blackburn made their changes and their equaliser was very fortunate, but it sums up how things are going for us at the moment. The shot was going straight at Radek, got deflected and went in off the post.
"We then conceded a late goal and that's been a problem for us."
For Clive, defeat overshadowed much of the personal pride at taking charge of the first team. "It was a fantastic experience for me, a dream come true, but we didn't get the result and that's what mattered. I love winning and I'm a terrible loser."
Clive Allen felt the nature of Blackburn's equaliser followed by more late agony summed up how things are going for us at the moment.