Or...we could just give them back their data...
Heck, we don't really even know if the message Solo sent to his friend went out - we were told there was no decent signal in the Catacombs....
We are dreadfully outgunned, and I really doubt these people intimidate easily, especially in view of their obvious tactical advantage, obvious badassness, obvious concern for appearances (can't lose face), and the fact that they think they're the good guys and in the right.
Just give them what they want - Solo only stole the data to see if he could trust them, and now they are parting ways with us, wo what's the difference?
The fight he was trying to avoid is now upon us!