While Wikipedia makes no mention of the reason for Arsenio’s demise. But does state that at one time he was wildly popular. There is absolutely no mention as to the timeline of his show. Immediately after the airing of the interview with Farrakhan, Mr. Hall got the ax.
Link to video in case you missed the fact that both Arsenio and other talk show host have lost talk shows when they incensed the Jews in some way. The link above has other videos but one or two have the actual Farrakan interview with Arsenio. I think the next day Hall got the AX from the JEWS!