Here are some L/R hitting splits:
O's LHB had a 701 OPS at home in 1198 PA and a 730 OPS on the road in 1210 PA
O's RHB had a 681 OPS at home in 1776 PA and a 683 OPS on the road in 1865 PA
O's pitchers allowed LHH a 688 OPS at home in 1222 PA and a 754 OPS on the road in 1023 PA
O's pitchers allowed RHB a 724 OPS at home in 1917 PA and a 731 OPS on the road in 1896 PA
So OPACY had a 107 park effect for OPS by LHH and a 101 park effect for OPS by RHH. Makes sense that lefties had an easier time of it than righties, I'm slightly surprised that both are above 100 for OPS given the overall effect for runs was neutral, but that may just be reflective of the Orioles poor situational hitting (and maybe the pitching staff's ability to get out of trouble).