Last year on my granddaughters birthday she raced at a somewhat local BMX track. Her BFF was with her and they usually come in 1st and 2nd or 2nd and 3rd. One week it would be one beating the other then next it would be the other way around.
The BFF wanted my granddaughter to win since it was her birthday. There were 4 kids in this age group and the girls were 2nd and 3rd. The BFF was meandering on the track, making sure my granddaughter would be a strong 2nd. She fell on one of the berms and the little boy who was coming in last actually got ahead of her while she was down. Once she got back up she started racing strongly again. She caught up to the little boy just as they went over the finish line.
Racer 1 was 1st, my granddaughter was 2nd, the little boy was 3rd, and the BFF was 4th. Needless to say, she was brokenhearted because she didn't get a trophy and she had had such a good plan.
The point of my telling you this story is the little boy who came in 3rd. It was his very first race and he did not even expect to win a trophy at all.
He was 3. Racing his bike on a regulation BMX track. He was ecstatic!
He had been riding his bike without training wheels for just over 1 month. So yes, it is possible that your son can do it. All it takes it letting him try. He's not going to get hurt or anything more than an owie or two.
If he can't do it after a day or two talk to hubby about putting them back on but seriously, even if they are not on he can use it as a balance bike and he will be riding it soon without the training wheels.
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It is probably because you were upset when you posted the question but my first reaction to your question was to tell you that perhaps you needed to learn to respect your husbands wishes with HIS son and stop bossing them around.
Knowing that things get said incorrectly when we are angry I was able to say things differently. Perhaps you and hubby need to take a breath and talk about respecting each other and one not being subservient to the other in any matter....