After one of the many clashes with Abu Sufyan beloved Prophet SAW said to him the words to the effect that he, Rasoolallah SAW, will be back. Means he will have another go at Abu Sufyan.
For reasons best known to them our Ulama do not talk about these kind of events.
The fact on the other hand is that Beloved Prophet PBUH quite often replied to the parting pungent shots of the enemies.
This has to be taken as a protocol for the conflict times.
If we combine this with the Hadith you have mentioned then to my untrained mind it boils down to the following - we should not fall to cheap levels.
With that understanding now let us take the current times. We Muslims today are passing through a phase in which we are just coming out of about a five hundred years old lethargy. The west has been besting us for all those years and has been at our throat.
In such a situation if we rejoice a little when Allah SWT implements a decision that is relieving for us I feel it is alright to feel happy.
Of course Allah SWT knows better.