I agree Ricci was not the guy that went in the house and took Liz. But there's no doubt the guy that did was an associate of Ricci. He had at some point heard Ricci's bragging about how easy it would be to break into the Smart home. He most probably got the key from Ricci in the Shriner's parking lot just before he drove up into Federal Heights. The middle of the night breakin, like Ricci's breakin of the Smart neighbors, the other house on the block he had worked on, and the small 9mm caliber pistol, same weapon used by Ricci in his bank robbery in November, place Ricci's planning all over crime.
The chair and cutting the screen were to give an unprofessional, non-Ricci flair to the crime but the unfortunate circumstance of MK being in the bedroom and seeing the handgun and the police determining the screen was cut from the inside place the crime squarely in the lap of Ricci and his associates. Not to mention the stupid sideshow of taking the Jeep in, taking it out, parking it away from his home for a week, taking it back all muddy wearing a machette, and then denying he ever had it and refusing to tell police who picked him up at Moul's. Only the most die hard, logic free Ricci lovers like lakey would still be in denial of Ricci being in the middle of this at this point.
The poor slob couldn't even rob a bank but he's a brilliant kidnapping strategist.
Yoo hoo....oh, yoo hoo....paging Dr. Henry Lee, paging Dr. Henry Lee....Sherlock has news for you.