1: Did Dom Maurus abscond? Highly unlikely. His life was at the monastery,he had no personal income independent of it, and a confused person is unlikely to make systematic plan for his disappearance.
2: Did he wander elsewhere in a state of confusion? Possibly, but such wanderers are often found within a day or two, either dead or alive; and in his distinct monastic habit he would easily have been noticed. Confused people cannot easily hide their tracks.
3: The monks favour the solution that he fell ill and was unable to summon help. . Considering his age this is highly likely, but when this happens the body is found lying in the open. But no body has been found. Did the dying man crawl into some shelter? But buildings would have been checked during the search and nothing was found.
4: People have been known to wander off to die in solitude. Others sometimes want to die in the open, and this cannot be ruled out, though you would expect a priest to want to die with the aid of the last rites of the church. If he died in solitude he would have to have concealed himself so well that none have been able to find him. But they have not.
The police suspect that the body may have been taken away by motor vehicle.
5: Police do not suspect kidnap. Although there has always been some anti-Catholic sentiment in some parts of Scottish society, there is no violence against individuals and no attacks on church ministers.
6:In disappearance cases often someone knows and is not saying. Dom Maurus was hard of hearing and had poor sight. Did he step into the road in the path of a car or van? Could the driver have had reasons to not report the accident to the police, possibly because he was a person banned from driving or driving without insurance? If the aged monk had died in the collision [you don't take impacts well at ninety three] the driver may well have stuffed the body into the back of the van and driven it off to be disposed of somewhere else. Roads in North East Scotland can be quite lonely, so it is possible that the driver in such an accident would have time to stuff a body into the back of a van without being seen. If this is the case, there is someone with a heavy weight preying on his conscience.
But whatever happened Catholics would say, requiescat in pace [ let him rest in peace.]