Slaven Bilic's men were hammered 4-1 at White Hart Lane, as two goals from Harry Kane as well as strikes from Toby Alderweireld and Kyle Walker handed Spurs a 4-0 lead, before Manuel Lanzini pulled back a late consolation for West Ham.
West Ham were thoroughly outclassed by Spurs, but in the eyes of former Hammers midfielder Sinclair, they didn't help themselves with their tactics.
The absence of injured playmaker Dimitri Payet meant that Lanzini came in from the flank to play as a central attacking midfielder, with striker Diafra Sakho playing out wide and Andy Carroll as the lone striker.
Yet as West Ham have found out before this season - specifically away at Watford - Carroll's style doesn't suit the counter-attacking nature of the Hammers under Bilic, and he often slows the play up when the ball is at his feet.
He may be a sensational threat in the air, but West Ham are far better when Sakho is playing as the central striker, enabling them to counter-attack by using his pace and power - and Sinclair stated that playing out from the back with Carroll playing up front was a major mistake.
sakho up top alone with his pace & presence demands respect and depth from opposition defense and allows another body in midfield #hignsight— Trevor Sinclair (@trevor8sinclair) November 22, 2015
West Ham failed to play to Carroll's strengths, and it was no surprise to see him substituted in favour of Nikica Jelavic after 63 minutes - and Bilic either needs to figure out how to use Carroll, or sell him on in when the January transfer window re-opens.
Do you agree with Sinclair's comments about West Ham's tactics against Tottenham?