Stage manager Debbie Williams is "my right hand during these shows," Ryan Seacrest said via Twitter.

A stage manager who has served as American Idol host Ryan Seacrest's "right hand" since Season 1 was injured in one of two on-set accidents that plagued the show's Tuesday-evening production.

During rehearsals and less than two hours before this week's performance show went live, Debbie Williams fell from the lighted staircase that Seacrest descends at the start of each show, when the steps retracted more quickly than they are supposed to.

Williams suffered a deep gash to one leg, and was "immediately taken to the hospital as a precautionary measure," Idol's producers said in a statement. Shortly after Tuesday's show ended, Seacrest shared via Twitter, "Good news ... Debbie is doing much better."

Idol viewers caught a rare extended glimpse of Williams when, during Season 7's "Idol Gives Back" show, she came on stage to help Brad Pitt with his microphone. "I just needed a reason to touch him," she joked at the time.

The faulty staircase was fixed by the conclusion of the broadcast, and in fact was then used by Gwen Stefani as she taped a performance to air during Wednesday night's results show.

William's staircase mishap was but one of two things that went wrong just before Idol's Rock Week performance show. As mentioned on-air by Seacrest, one of the setside towers holding a revolving American Idol logo fell over, shattering glass and debris onto the stage.

The combination of production snafus resulted in Top 4 finalists Adam Lambert, Allison Iraheta, Kris Allen and Danny Gokey being limited to 30-second dress rehearsals, all of which wrapped just minutes before the show went live.

For the latest on American Idol, tune into TV Guide Network's Idol Tonight every Wednesday at 8 pm/ET and Idol Wrap every Friday at 8 pm/ET with co-hosts Kimberly Caldwell and Justin Guarini. Plus get more on your favorite Idols every Friday with American Idol Rewind at 7 pm/ET.