I think it would depend on what it is. I am quite sensitive so if I got hurt by my T it would be probably hard for me to gain the trust back, or it would at least cause some kind of rupture, altough knowing me I probably wouldn't admit to it at first. However, if he would admit his mistake and genuinely tried to fix it and not let his personal stuff get in the way, and I had a good relationship with him otherwise, I would try to work it out.