The 61-year-old rejoined the struggling Pirates, a side he managed between 1993 and 1996, on a contract until the end of the season with a view to extending his stay at the Memorial Stadium - a decision which meant he had to turn down a director of football role at Plymouth.
"The excitement was the thing that convinced me that this was the right thing to do," he told Press Association Sport. "I had been three months without a job and I then had two choices which was incredible.
"With my hand on my heart; Plymouth was a great job and a nice job. But this one puts my neck on the block. Part of me thinks I'm crazy but part of my is excited about this fantastic challenge."
"I feel I have had to let Plymouth down a little bit but to be fair to the people of Plymouth they've been brilliant.
"They knew of my contact here and my affinity with this football club. I had to do it. You have some things in life where you think 'I have to do that' and this is one of those things.
"I couldn't turn Bristol Rovers down. Had it been any other football club then I'd have probably said no and that I had a commitment to Plymouth Argyle."