One wrong move might have Hideyoshi to be in a pincer drive by MORI troops and AKECHI troops, and in fact, another Nobunaga's vassal, Kazumasu TAKIGAWA, was defeated heavily and lost his territory because the enemy noticed the incident at Honno-ji Temple; so it is difficult to think Hideyoshi planned such a dangerous booby trap intentionally.
一歩間違えば秀吉は毛利勢と明智勢の挟み撃ちにあった恐れが大であり、現に滝川一益のように本能寺の変が敵方に知られた事により大敗し領土を失った信長配下の武将も存在し、秀吉がこのような危険極まり無い事を、謀略としてあえて意図したとは考えにくい。