[gd191]

In answer to your specific question. The first block at 0:52 by #51 is legal. The blocked player ,once down, attempted to get back up, and as far as #51 knew, would influence the play. As an official, seeing this from the flank (not pinched in so much) and knowing what has occurred, I would simply watch #51 to see how he continues to block. Maybe talk to him. This is after all 8yr old football, our first job, not being a coach, but as an official/adult is to encourage fair play and sportsmanship. If he continues to block in this manner which could be construed as not necessary, talk to his coach, then the player, lastly flag him.
The second block is indeed a flag, not real thought there, flag it. If the player or coach needs an explanation, talk to them.
As for the critique on the officials, well... that was not was billgates51 asked, so why comment on this? But since it was brought up in further discussion, I'll comment too:-) since we do not know these officials, their experience level, their local mechanics etc, none of us can really comment on them specifically. Rather I think the comment directed to them is generally about the mechanics. Did they pinch in too tight, yeah probably? Does it seem kind of "lazy"…. matter of opinion, yeah maybe. But I know after my 6th game of Saturday youth football, I am ready to go home, while I try to give each game my all, I’m kind of tired too.

By the way, this is a very valuable resource for officiating questions. I have seen very good arguments pro and con on many good questions. While I myself have some years officiating under my belt, I value reading others inputs, views, interpretations. I am glad I found this forum.
By the way my favorite Saturday morning answer to pain in the butt coach is "Yeah coach I saw it, you got nothing"

Happy conditioning folks! Have a great 09-10 season.