Yes it is. Those little plastic pieces are really the source of all our woes.
I've got a drivers side regulator in my garage with those pieces all goobered up. Soon I will have the passenger side as well. My plan is to try & find something to 'fix' the regulator rather than replace it.
In the mean time, if you unbolt the glass from the regulator it should give you enough freedom to get that top guide back on the regulator. It may not stay though since the piece that grabs the track on the regulator is broken off. You need to get that piece back in place before you do anything else.
My washer fix (that pushed the upsy downsy thinggy against the track of the regulator) only bought me about 18 months before the regulator was too goobered up to work anymore.
You can certainly tell that I've discussed this topic at length with Sue ... her VX verbiage has rubbed off on me.