BE35 pilot reports flying a straight in VOR Runway 27 approach to GLR from SPARR when cleared for the approach by ATC. After the fact he believes that a procedure turn was called for.

Narrative

I was approaching SPARR Intersection to the east of GLR on an IFR flight plan. While northbound to SPARR [on V609]; the Controller cleared me for the VOR/GPS 27 approach with instructions to 'maintain 3;500 until established; cleared for the approach.' SPARR Intersection sits directly on the 090 radial of the GLR VOR. However; it is not shown on the approach plate as a valid fix. I proceeded to a point just inside SPARR on the 090 radial and turned to the runway heading; intercepting the inbound 270 [090] radial and proceeded to descend toward DEYYY Intersection as shown on the approach plate; then descended further without incident. However; upon looking at the approach plate; a procedure turn is shown. My interpretation of my final waypoint at SPARR was that it was essentially a 'vector to final' approach; but since SPARR is not on the approach plate; it now appears that I should have flown to the VOR; then turned outbound for the procedure turn; then turned back inbound. I am asking an FAA instructor for his interpretation of this; but I believe that it would have been safer for the Controller and me to confirm whether a procedure turn was being flown or not. If SPARR had not been directly on the 090 radial; the situation would have been clearer; I think. The approach was flown at the proper altitudes and within the 'protected area' around the approach; the question is really about the procedure turn being mandatory and expected in that situation.