Really? What did Doyle say? I know that he got along more with Bruce but I've never come across anything negative about O'Hare, except from Claudia Christian who said that he was too serious and not as fun as Bruce to work with.
It may be a story I've read where MO'H reportedly acted strange when JD gave him a ride to the studio. Frankly, I take it with a grain of salt because I've seen JD at a few conventions and find him highly entertaining but...less than nice much of the time, especially if he's had a few.