[Dan-o]

I remember a situation that might be what you're looking for. I will leave team numbers out of it in case anyone wants this to be kept quiet.

In 2005, "Team A" significantly helped "Team B" throughout the build season and both showed up to the same regional with functional machines. Team A was not very successful and end up placing in the bottom 10% in the final rankings. Team B, however, seeded 1st. It became clear that Team A was not going to get chosen for the elimination rounds. The captain of Team B offered to use their second pick to select Team A so they could have a shot at eliminations. Team A declined saying that Team B should pick the team they though would best help the #1 alliance succeed. Team B picked a more competitive partner and ended up winning the regional. Team A went un-picked, but cheered Team B on throughout the eliminations.

My opinion is that both teams acted honorably.