SOLUTION: You could turn, snarl, and tell them in no uncertain terms that you have no intention of cutting their grass, no matter how much they might plead (Just kidding.) It is suggested that you turn, smile, and extricate your limbs or neck from their grasp. Then, with the utmost politeness, explain to them that it would be far better for you to lightly hold their arm so that they would precede you just a bit. You could explain that they could pause at steps, pull their elbow in if they wanted you to walk closer to them for a moment, or extend their arm back if they wanted you to walk behind them in a cramped space. You might explain that they would precede you through doorways, telling you on which side to take the door from them. In that way, you could avoid dancing in doorways while you each grapple for power over the offending portal.
The old maxim is true, that knowledge is power. You can receive more in depth instruction in orientation and mobility, as it is called, by contacting EYE-DAS for referral to an agency to assist you in this if you are in the San Gabriel Valley, or contacting your State Department of Rehabilitation.
Call 411 for telephone numbers in your area.