The stuntman spent Christmas (10) in hospital in New York after falling from a ledge during a performance of Spider-Man: Turn Off The Dark in December (10), sparking rounds of safety investigations into the show.
He suffered several broken ribs, a fractured elbow, a bruised lung, three fractured vertebrae and a cracked skull, and underwent back surgery, as well as months of subsequent rehabilitation treatment.
Tierney vowed to return to the New York stage after the accident and he fulfilled his promise by slipping back into his stuntman Spider-Man suit this week (beg09May11) to re-join the show in its first performance since it was shut down for a serious overhaul.
He tells the Associated Press, "It was a two and a half hour roller coaster ride. I'm stronger coming back than I was before. Only a little soreness here and there.... We are the safest show on Broadway, I'll tell you that much. I actually think it's a little too much now."
Director Julie Taymor exited in March (11) and a new creative team helped revamp the production during its hiatus.
U2 stars Bono and The Edge, who created the score, added new music for the show, while the story was rejigged and many of the stunts changed. Before the Thursday night performance, producer Michael Cohl welcomed the audience and called the production "almost a brand-new show".
The musical, which has previously been marred by onstage technical glitches, ran smoothly and lead actor Reeve Carney, who plays Peter Parker and Spider-Man, admits all the castmembers felt happy with the results of their hard work, adding, "It was so exciting. This cast is so amazing and we were all feeding off each other tonight."
The night was also extra special for actress Jennifer Damiano, who plays the superhero's love interest Mary Jane Watson, as she celebrated her 20th birthday on Thursday.
Spider-Man: Turn Off The Dark is set to continue previews until next month (Jun11), when the show will officially open on 14 June (11) after numerous postponements.
Work on the multimillion dollar Broadway production - which has been scored by the Irish rock giants - was delayed this year (09), amid rumours of financial difficulties and spiralling costs.
But Michael Cohl announced over the weekend (07-08Nov09) he had signed up to take over the production and ensure it debuts in 2010 as planned.
Cohl also confirmed relative unknown Reeve Carney had been cast in the lead role as Peter Parker/Spider-Man, joining Evan Rachel Wood and Alan Cumming in the show's cast.
It's unknown if Spider-Man: Turn off the Dark will be ready to preview on 25 February (09) as originally planned, or make the Tony Awards deadline of 29 April (09), but Cohl claims he is "very close to having in place the financing that we need and getting everyone back to work on the musical".
Spider-Man is expected to become the most expensive Broadway musical ever, costing an estimated $50 million (£31.35 million).