Slow speed steering should be an easy one handed operation. Open up the front engine hood and check the power steering fluid. My reservoir is at the upper right of the engine compartment. Make sure it's up to the operating level. If it's OK then the power steering pump may be shot. The stabilizer arm will have no effect on steering effort.
Fran, Mary & Zoey (silver Cocker)
2006 Itasca Sunrise 35A, 2005 W-22, Allison 1000 5 speed
'13 Ford Focus ST or '10 Prius on Master Tow Dolly 80THD-SB or '00 Jeep Cherokee 4-down