"It was just a rollercoaster wasn't it, up and down. No points on the first day, you run out of days pretty fast. I suppose even starting with the Stage One part, I was lucky to get to the Quarter-Finals and automatically go straight through so I had a day off in between the Last `128 stage. I was grateful for that day off," said O'Shea to Weekly Dartscast.
He could have won it outright but an injury prevented that as he lost to eventual day winner, Ross Montgomery.
"I was feeling really good but my ankle in the Ross Montgomery came at me when I went 4-3 up. I just could not concentrate, my darts were all over the place. I got ice and a heat pack on it, we strap it up the following day. It was fine, it was just one of those things, a lot of standing around and a lot of darts."
But that disappointment turned into elation for 'The Joker' who found out he claimed a Tour Card and he summed up his emotions.
"Even the night before with the six points going into the last day, we had spoke about it. I was probably more calmer on the last day playing Shaun (Griffiths) than I was throughout the week. I blew a 5-2 lead and he played really well. He stuck with me and took his chances. I had three darts at double eight and I missed and that was it."
"After Shaun's game, I went out and sat down. I was just daydreaming for a while. I clicked on my phone and refreshed it, my name turned green. There was actually no one at the table, I had a moment to myself to pull myself together, I was absolutely thrilled."
"I can honestly say the amount of time and effort I've put in over 25-30 years is extraordinary for a sport I love."
But how does it rank compared to his World Masters triumph? It is a close second for O'Shea who also sent an ominous warning to the rest of the field.
"The World Masters is still up there at the top but a Tour Card is a good second. I'd like to think I'd do ok when it starts up, nothing fazes me. I've played these guys before and I was able to hold my own. I think I'm a far better player now. Chaos is definitely coming."