Scenes after the game saw Micky van de Ven and Pedro Porro confront angry travelling Spurs fans at the Vitality Stadium. Video footage showed Porro being dragged away by team-mate Guglielmo Vicario before Frank approached the away end to deafening boos.
Romero wrote on Instagram: “Apologies to all fans of you who follow us everywhere, who are always there and will continue to be. We are responsible, there’s no doubt about that. I am the first. But we will keep facing up to it and trying to turn the situation around, for ourselves and for the club.
“At times like this, it should be other people coming out to speak, but they don’t - as has been happening for several years now. They only show up when things are going well, to tell a few lies.
“We’ll stay here, working, sticking together and giving our all to turn things around. Especially at times like this, keeping quiet, working harder and moving forward all togetheris part of football. All together, it will be easier [at Tottenham}.”
Porro and striker Richarlison have since replied to the post by supporting their captain, while the likes of Xavi Simons and Radu Dragusin have liked it.
It is not the first time Romero has publicly hit out at the Spurs hierarchy. Speaking in December 2024, following a defeat to Chelsea, Romero said: "You have to realise that something is going wrong, hopefully, they [the board] realise it.
"The last few years, it's always the same - first the players, then the coaching staff changes, and it's always the same people responsible.
"Hopefully they realise who the true responsible ones are and we move forward because it's a beautiful club that, with the structure it has, could easily be competing for the title every year."