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Sago palms do not like to be disturbed so any transplanting needs to be done with great care. Mature palms can be transplanted in early spring or late fall. Be sure to relocate the plant in a similar area, under the same or similar growing conditions--full sun, well-draining soil, etc. Include as much of the root system as possible when digging up and moving it. You may also want to consider trimming the plant back to prevent transplant shock. Here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm

Since it's in a pot, it would probably be a good idea to bring the plant indoors for overwintering. If this is not an option, then you might want to consider wrapping the plant or mulching over it. You should also place it near the home or an unattached garage for additional protection but make sure it's in a location where it will not get wet.

This article may offer some help: https://www.gardeningknowhow.com/ornamental/trees/sago-palm/prune-sago-palm.htm

Your palm is flowering. This site can help with information: http://www.rhapisgardens.com/sagos/sagoseed.htm

It is possible the roots are still coiling. This can happen. You can cut them, but first try "teasing" them. This is basically roughing them up a little (like you might a little kid's hair) to get them out of the circular path. If this does not do it, then cut. The reason I am hesitant to suggest the cutting off the bat is that it may leave too little roots to support the current size of the plant, so those should be used as a last resort.

It is generally not recommended that you prune sago palms for height, as this will most likely kill the plant. For your situation though, you may want to consider stripping the lower fronds so that they do not block the line of sight. If you have not read it, here is an article on pruning sago palms: https://www.gardeningknowhow.com/ornamental/trees/sago-palm/prune-sago-palm.htm