Im quite surprised on how you convinced Rizal to leave. IMO, based on Rizals character, he wont leave simply because Spain planned to kill execute him. He would have probably left because the Revolution was a point that he recognize Philippines can win via armed struggle and that words/propaganda are not enough.
At this point Rizal still believes he can win his case (despite the odds), partially due to his connection to Blanco, even though the Governor is already powerless. He doesn't know yet that a new Governor favored by the friars would seal his fate. OTL, he only gave up when the verdict was announced. ITTL, it took a government insider to finally make him embrace the reality that he was already doomed by the time he stepped on Manila's soil, and his death would only fuel the rebels.
On another note, Rizal was only convinced to escape. He hasn't decided yet if he'll join the Revolution (I realized that I've just butterflied away his manifesto), he may even attempt to stop it.
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