It does however provide strong indications for who possible was responsible for the increase in hostilities.

No, it doesn't, because it is not a statistically significant sample. You have no way of knowing whether the SMM recorded missing weapons because they were removed the day before, or because they were removed weeks ago and that day was the first SMM visit since then. Even more importantly, you have no way of knowing whether weapons were removed from other areas as well, because the SMM did not visit those other areas.

Indeed history does show that, however it still does not address the fact you have missing rebel equipment with the resignation of hostilities whilst Ukrainian equipment is it's checked locations.

Again, that report mentions only a small sample of rebel equipment, and only a small sample of UAF equipment. You do not know whether other rebel/UAF equipment is in place or has been removed (indeed, the report from the fourth presents a completely different picture from the first, only further demonstrating the unreliability of any single report).

multiple missing equipment from multiple rebel designated locations and completely barring of other areas is highly damning

That has been the case, for both sides, on and off ever since Minsk II came into effect. The reports from before September, as well as after November, do not differ significantly in holding area violations. If anything, that is indication that holding area violations do not correlate to the level of violence, which only casts more doubt on your particular chain of reasoning.

The one point that I will concede is that based on long-term trends over several months, it does appear that rebel forces block inspection more than UAF forces. Nevertheless, both sides have moved weapons in violation of the cease fire, and both sides have blocked OSCE access in the past. The fact that it happened again is not by itself indicative of any new activity. Now, if we see that behavior repeated at a consistently higher frequency that would be indicative of something going on, but so far we have insufficient data to make that conclusion.