Sannino said: "We started the game 45 minutes late and I'm disappointed for the supporters and for my group. I hope that this will be a starting point to improve and to understand something.
"I would like to see my players always play good football, nice and easy football as well, but we were a little bit slow.
"It was difficult to come out with the ball. We played a lot of back passes which disappointed me, that was the point I didn't like. But it is a part of my job. What we saw in the second half is giving me a lot of positives."
Sannino gave a debut to new loan signing Alexander Merkel but he was sent off in time added-on following a challenge on Nick Blackman.
Asked about the red card, the Italian replied: "It's a shame. It was a foul of frustration I think where everybody would like to touch the ball, to recover the ball, to go and attack.
"But the minutes were going very quickly. If the referee did show him the red card, you have to respect the decision."