Just got a brand new mountain bike and the front wheel is so out off true spin it looks undesirable. But I know it can be fixed. I have the tools for it . my question is, can I just remove the front wheel off of my bike and lay on a flat table , lose in all the spokes and start from scratch to repair the wobble. I mean it really sounds like a logistical technique. Any opions would be very welcomed. Thank you all. Tye
On a brand new bike I would expect the seller to take responsibility for this and sort it out.
If this is not an option, the usual way to true a wheel without a stand is to turn the bike upside down, or remove the fork and hold in a vice, attach a zip-tie to one of the fork legs and use that as a guide.
The procedure is spin, find largest deviation, pull/push that towards the centre, repeat ad nauseam. There are guides all over the internet on the actual process of truing.
Do not just loosen the whole wheel. Getting a slightly wobbly one straight is easier than building one straight from scratch.