can't speak on the first ruling, i don't do enough zm. however, i can say for the 2nd, in the room that roflol caded there were only 2 entrances. both entrances were crouch spots. from the rules directly:
Barricading - Regarding illegal barricading / God items
Barricading all entrances to a crouched spot.
now...i'll ignore any map-specific rules that may exist as i don't have enough knowledge on them either, and i can say this: if there's no rule against it, an admin saying it doesn't make it one.
the rule states that barricading all entrances to a crouched spot is illegal. personally, i take this to mean that the barricade by roflol was illegal. i think the rule mainly outlines vents, which are definitely "crouched" spots, but i also think it applies here even though the occupants don't have to be crouched once inside. the point is, i believe, that you can't barricade both entrances to any area that can only be entered by crouching. what i just said might sound really dumb and obvious but i'm trying to be very specific about this. in this case, roflol was in the wrong it seems.
if others agree on that, then ban length becomes an issue. roflol was permabanned. i also remember watching him a while back and seeing him block people intentionally. i'm obviously not the one who makes a call in this case, but i wanted to present that info.