As soon as he landed on the inflated landing mat, and with the crowd on its feet, Mike immediately began preparing for his next attempt at flight.

翻译： 马克身体刚刚落在充气垫上，观众还没坐下，他马上就开始准备下一次飞跃。

请教专家老师，通常with介词结构直接接在句子后面，介词with本身就具有连接作用。

为何本句中的with复合结构前需要加上“逗号和and”？可以简化写成“As soon as he landed on the inflated landing mat, and with the crowd on its feet”吗？作者是怎么想的？谢谢老师们为我们解答。