Ok guys, thanks for chiming in.
I decided to venture to Harbor Freight and bought the oscillating multi tool ($23) and then onto Home Depot and bought a good quality Bosch carbide cutter ($35).
Using my 4 1/2" angle grinder I made several rectangular (longitudinal) window cuts that way I could drive the angle grinder deeper into the bar (as it was bottoming out before) and I used the oscillating HF tool in the tight areas and also to break the spot welds. I took the bar out in sections and also used a bit of working the bar back and forth by hand to fatigue the welds.
By 9:15pm I was done and my T-shirt was soaked, the shower afterwards was welcomed.
Here it is removed:
