Answered: wall?

would making a wall that extends but does not detatch, from the side of a robot, be illegal or considered pinning? if the wall completely isolates one area for a team?

No this would not be inherently illegal. It would only be considered pinning if the violated the pinning rule. I’ve quoted both the definition and the rule for your convenience.

Completely isolating a team in an area larger than 2’ x 2’ (approximately one foam tile) would not be considered pinning.