The 29-year-old Staggies skipper signed a pre-contract with the McDiarmid Park club in January but has controversially expressed a desire to walk away from the deal for what he claims are family reasons.
However, Lomas, who is preparing his side to host County on Sunday in the Clydesdale Bank Premier League - claims Brittain wanted to move to Saints when the deal was agreed.
The Northern Irishman told Press Association Sport: "I hear Derek Adams said I have blanked Richard but he blanked Richard to the extent that he was begging us to get him out of his contract in January.
"We tried to do that but we were quoted £50,000. He was desperate to come here.
"I haven't spoken to Richard out of respect to Ross County, I don't think that would be right.
"We feel we made a commitment to him. I turned down the chance to sign three or four players in his position.
"Neither Ross County nor anyone else offered him a two-year deal so we feel he should honour it.
"Where does it leave pre-contracts if he doesn't?
"We are being made out to be the bad guys but we gave him a two-year contract six months before his contract was going to expire. If he gets injured we are obligated."
- Sports & Recreation
- Clydesdale Bank Premier League