Temporary and permanent paralysis, including of facial features is a common result of strokes. Often on one side of the body or the other, depending on which part of the brain was affected.
Maybe even TIAs (mini strokes), not sure.
There's been some reasoned speculation, but speculation nonetheless, that a) his leg swelling is related to thrombotic syndrome or blood clots, which might make some sense given its relatively recent and sudden appearance and b) he has had some TIAs transient ischemic attacks, or mini strokes that aren't usually debilitating, but could also relate to clotting disorders as well as cranial atherosclerosis and c) this led to his taking blood thinners which would be a very logical explanation for the hand bruises.
TIAs will cause sometimes some temporary speech difficulties, balance problems, and various such things but don't know about the paralysis. They'd be a good explanation for some of his recent "behaviors" and his weekend "absence."