With Morgans helping mediate, Xie Wen naturally no longer needed to hold Cracker captive. The birdman might not be all that strong, but Xie Wen still trusted his networking skills, so without waiting for any outcome from Big Mom, he tossed the still-unconscious Cracker back to the Homies.
After retrieving Cracker, the Homies immediately fled aboard the Biscuit Ship. Their role was basically the same as Germa's clone soldiers, after all, and they had neither the ability nor the courage to cause trouble for Xie Wen and his companions.
Before Cracker was tossed back to the Homies, however, Ai Haibara Meow had drawn several syringes of blood from him with a large syringe and collected plenty of tissue samples from the wound on his shoulder. So although Xie Wen had failed to extract the Biscuit-Biscuit Fruit from Cracker, there was still hope of replicating his ability using his lineage factor...
Xie Wen figured that the fruit's greatest use would probably be ensuring that the Palico Restaurant never had to worry about its biscuit supply again, but having material for Ai Haibara Meow to research and develop lineage factors was a good thing regardless.
Even if it took Ai Haibara Meow a long time to produce something like the Seraphim, wouldn't there still be mature technology on Egghead to "borrow from" in a few years?
Once Luffy and his crew landed on Egghead under the influence of worldline convergence, that naturally chaotic Monkey brat would help draw attention away, allowing Xie Wen to have Kuma sneak them onto the island to loot it amid the chaos. Forget the Seraphim-by then, Ai Haibara Meow could even create an entire "Celestial Organization."
Cracker's intrusion naturally put an end to the restaurant's business. After tidying up the deck, Xie Wen and his companions left