Actually, from Wilt's description it is not clear whether it is the Info button itself, or the half-screen program description that is causing the memory leak. I suspect, it is the half-screen program description. (And I know that this portion of the program has been changed in the latest version: they added star-rating, year, etc.)
If it is the the half-screen description that should be avoided, note, that the Info button is not the only way of getting there. The OK button pressed while in the Surf Bar or in the PG (highlighting a future program) also brings that half-screen description. I guess, these actions should be avoided too.