The AFC South side lost 19-9 to the Chargers on Monday, and face another AFC West side, the unbeaten Denver Broncos, this weekend.
The head coach told the team's website: "Our guys after games like that, the quicker you can get back on the field and play a game, I know it can't come quick enough for all of us. We have to go through the process and prepare for this next opponent. Sunday can't come quick enough.
"It certainly was uncharacteristic of us, some of the things that transpired. I think you point your finger to a lot of things. [We] didn't execute well. Third down was an issue on both sides of the ball, which led to the time of possession issue.
"We had chances. You have one over the top, a couple of shots down the field that should be big plays, but we didn't capitalise for whatever reason. We'll deal with it."
The Colts top the AFC South with a 4-2 record.