Boyd has been banned for two matches after picking up a straight red card for lashing out at Goodwin during the 1-1 draw in Paisley.
Goodwin concedes his own response may have been a little over the top after watching the incident again on television, but claims there are no hard feelings as far as he is concerned following the clash.
He said: "I was slightly embarrassed when I watched it back on Sportscene on Sunday night. It's always a really difficult battle with Kris Boyd. He's a terrific player and I've got a lot of respect for him as a footballer. His goalscoring record is phenomenal.
"It was just a heat of the moment thing and I think it's fair to say, from his point of view, it was a silly reaction [from him]. But I've been there myself and I'm not one who should be pointing the finger at people for making stupid decisions.
"In the heat of the moment, I've done that kind of thing myself. I know he regretted it, he probably regretted it instantly. He's a big, big player for Kilmarnock and he's going to be missing for some games now."
Boyd had given Kilmarnock the lead before his dismissal and Saints took advantage of the extra man when they levelled through Gary Harkins.
Goodwin felt the Buddies should have won the game but believes there are positives to take into this weekend's match against Ross County.
He said: "We felt it was two points dropped on the day to be honest which was a bit disappointing. But there are loads of positives we can take from the game. We defended reasonably well and we created a whole host of chances.
"One of these days, somebody is going to get on the end of them and we are going to give a team a really good going over."
Saints now prepare to travel to Dingwall to face a Ross County side who are smarting from last week's 4-0 thrashing against St Johnstone and who are also still seeking their first win of the season.
Goodwin said: "Ross County are struggling a wee bit just now and they'll be trying to make amends for that bad result at the weekend.
"We always expect a difficult game up in Dingwall and I can imagine what Derek Adams has been saying to his players all week and I can imagine the work they've been putting in on the training ground.
"It was an embarrassing defeat away to St Johnstone and it's something they will want to put right.
"They've added a number of new faces from the team last year and sometimes it takes time for new players to fit into the system and get used to the manager's ideas and get used to their new team-mates.
"I hope they don't click into place this weekend, that's for sure."
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