NS are both accomplished players (over 5,000 MP each) but not an experienced partnership
EW are good players (well, West is; East was me) but significantly less-experienced than NS
The auction was as shown. South thought for quite some time before passing over 2♥. After South's pass, West began to consider his call. (Clearly, he was deciding between passing and a 3♣ balance.)
Upon noticing West starting to think, South turned to West and said something like (sorry I don't remember it verbatim): "You really don't want to bid here. We play negative free bids, so my partner's double followed by 2♠ shows a much stronger hand than bidding 2♠ directly. 2♠ was forcing by agreement but I judged to pass."
West considered this and passed. 2♠ was held to 8 tricks (9 tricks are available) for +110 NS. 3♣ EW would be held to 6 trump tricks, and maybe not even that (an overruff is lurking).
Most of the room scored 140 or 150 NS, so -110 was a near-top for EW.
What do you think of South's actions?
Should West have summoned the TD prior to his final call?
Do EW have a claim for damage? (-150 in 3♣ would be a zero, but +100 in 3♠ would be a top. Of course, it's not clear that either N or S would have bid 3♠, and even if they had, they may have adopted a different line of play and made the hand.)
This was the last hand of the round. Midway through the next hand (at the next table), West wanted to call the TD. Would this have been too late for an adjustment (if, indeed, any was appropriate)?